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Hytrin (Terazosin)

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Hytrin is a high-quality medication which is taken in treatment of hypertension. It is also used in the treatment of benign prostatic hyperplasia. It is working by tightening of a certain type of muscle in the prostate and at the opening of the bladder.

Other names for this medication:

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Also known as:  Terazosin.


Hytrin is an effective remedy against hypertension. Its target is the treatment of benign prostatic hyperplasia.

Hytrin is working by tightening of a certain type of muscle in the prostate and at the opening of the bladder.

Hytrin is also known as Terazosin, Terapress.


Take Hytrin tablets orally with or without food.

Do not crush or chew it.

Take Hytrin at the same time once a day with water.

If you want to achieve most effective results do not stop taking Hytrin suddenly.


If you overdose Hytrin and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Hytrin overdosage: fainting, shock, dizziness.


Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F) away from moisture, light and heat. Higher temperatures may cause the capsules to soften or melt. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Hytrin are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not take Hytrin if you are allergic to Hytrin components.

Do not take Hytrin if you're pregnant or you plan to have a baby, or you are a nursing mother.

Try to be careful using Hytrin if you are taking nonsteroidal anti-inflammatory painkillers such as Motrin and Naprosyn, other blood pressure medications, such as Dyazide, Vasotec, Verelan, Calan.

If you want to achieve most effective results without any side effects it is better to avoid alcohol.

Be careful in case of machine driving.

Do not stop taking Hytrin suddenly.

hytrin 2mg capsules

In this double-blind randomized clinical trial, 73 patients with unilateral ureteral stone and hydroureteronephrosis who underwent insertion of an internal ureteral stent after transureteral lithotripsy (TUL) were randomized into two groups. 37 patients received terazosin 2 mg (once nightly) for 4 weeks and 36 patients received placebo for the same time duration. After 4 weeks, all patients were asked about the incidence of frequency, nocturia and urgency by an International Prostate Symptom Score (IPSS) questionnaire, flank pain and pain during urination by a visual analog scale (VAS) score, and hematuria.

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The 1,078 men who completed 12 months of the trial are included in this study. Of those men 1,040 (96.5%) had at least 1 episode of nocturia at baseline and 38 (3.5%) had less than 1 episode (baseline nocturia is an average of 2 measures). Of those 1,040 men 788 (75.8%) had 2 or more nocturia episodes. Overall, nocturia decreased from a baseline mean of 2.5 to 1.8, 2.1, 2.0 and 2.1 episodes in the terazosin, finasteride, combination and placebo groups, respectively. Of men with 2 or more episodes of nocturia 50% reduction in nocturia was seen in 39%, 25%, 32% and 22% in the terazosin, finasteride, combination and placebo groups, respectively. Changes in nocturia were correlated with changes in reported bother from nocturia (Pearson correlation 0.48), BPH impact index (0.32) and overall satisfaction with urinary symptoms (0.33).

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To clarify the influence of hypertension on lower urinary tract symptoms (LUTS) we examined the relationship between blood pressure, LUTS, and the effect of terazosin on LUTS in patients with benign prostatic hyperplasia (BPH).

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Terazosin is a quinazoline antihypertensive agent that is chemically similar to prazosin. The saturated furan ring of terazosin distinguishes these two compounds. Terazosin (0.1 to 3.0 mg/kg) lowered blood pressure without increasing heart rate when given orally to spontaneously hypertensive rats. No tolerance was observed during five days of repeated oral administration. Although equally efficacious in spontaneously hypertensive rats as its congener prazosin, terazosin exhibited a more gradual onset of action than prazosin, a more uniform and linear dose-response curve, and a less variable duration of action. When administered intravenously to dogs, terazosin lowered blood pressure primarily by decreasing peripheral vascular resistance. Pretreatment with phenoxybenzamine but not with atropine or propranolol resulted in a greatly reduced hypotensive response to terazosin, demonstrating that this effect of terazosin is mediated by a sympatholytic mechanism of the alpha type. The nature of the alpha-blocking properties of terazosin was evaluated in vitro using both radioligand binding studies and functional tests in rabbit aorta and pulmonary artery. These studies demonstrated that terazosin is highly selective for alpha1 receptors. The affinity for alpha1 receptors was approximately one-third that of prazosin. Like prazosin, terazosin displayed minimal interaction with alpha2 receptors. Median lethal dose values in rats ranged from 0.255 to 0.270 g/kg for intravenous administration and from 5.5 to 6.0 g/kg, for oral administration. Oral administration of high doses of the compound to rats did not produce any gastrointestinal irritation and/or apparent abnormal behavioral effects. Comparison of the oral activity of terazosin in spontaneously hypertensive rats with the oral toxicity values in normal rats revealed a high efficacy/safety ratio. Terazosin given intravenously to rats and mice was 2.6 to 5.0 times less toxic than prazosin. The absorption of terazosin appeared to be slower than that of prazosin in rats. However, from eight to 16 hours after dosing, terazosin concentrations in plasma exceeded those of prazosin, suggesting the possibility of once-daily dosing with terazosin. In addition, terazosin exhibited statistically significant cholesterol lowering effects in gerbils.

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The aim of this study was to analyze the cases of gynecomastia associated with α1A-adrenergic receptor antagonists (α1-ARAs) in the Italian spontaneous reporting system database (Rete Nazionale di Farmacovigilanza or RNF) and in the World Health Organization ICSRs database (VigiBase(™)), focusing on tamsulosin use.

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A simple, sensitive and reproducible high-performance liquid chromatography (HPLC) method was developed for the determination of terazosin in human plasma. The method involves a one-step single solvent extraction procedure using dichloromethane with a 0.25 ml plasma sample. Recovery values were all greater than 90% over the concentration range 0.25-100 ng/ml. Terazosin was found to adsorb to glass or plastic tubes, but this could be circumvented by using disposable plastic tubes. Also, rinsing the injector port with methanol after each injection helped to prevent any carry-over effect. The internal standard, prazosin, did not exhibit this problem. The method has a quantification limit of 0.25 ng/ml. The within- and between-day coefficient of variation and accuracy values were all less than 7% over the concentration range 0.25-100 ng/ml and hence the method is suitable for use in pharmacokinetic studies of terazosin.

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In 21 adult and three paediatric spinal cord injury patients manifesting recurrent episodes of autonomic dysreflexia in the absence of an acute predisposing cause, the use of terazosin, a once-a-day, specific alpha-one blocker resulted in complete subsidence of the dysreflexic symptoms. However, one tetraplegic patient required termination of terazosin therapy because of persistent dizziness.

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To compare the effects of the doxazosin and terazosin on total International Prostate Symptom Score (IPSS) and maximum urinary flow rate (Qmax) in treating patients with lower urinary tract symptoms (LUTS) and compare this effectivity by switching the drugs in the patients who did not benefit from either the first or the second drug.

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AUA-SS (0 to 35 point scale) improved from a baseline mean of 20.1 points by 37.8% during terazosin (n=976) and by 18.4% during placebo (n=973) treatment (P<0.001). Similarly, statistically superior improvements were observed in regard to the AUA-BS, BII, and the QQL score in the terazosin-treated patients. Peak urinary flow rate improved from a baseline of 9.6 mL/s (both regional treatment groups) by 2.2 mL/s in the terazosin group (n=137) and by 0.7 mL/s in the placebo group (n=140) (P< or = 0.05). Treatment failure occurred in 11.2% of terazosin- and 25.4% of placebo-treated patients (P<0.001; Kaplan-Meier adjusted withdrawal rates of 365 days). Withdrawal from study drug treatment due to adverse events occurred in 19.7% of terazosin- and 15.2% of placebo-treated patients (P<0.001).

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The study included 100, 20 to-50-year-old subjects who met the consensus criteria for chronic prostatitis/chronic pelvic pain syndrome and had not received previous alpha-blockers. Subjects were randomized to receive terazosin with dose escalation from 1 to 5 mg. daily or placebo for 14 weeks. The primary criterion for response was scoring 2 or less ("delighted-to-mostly satisfied") on the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI) quality of life item. The secondary criterion for response was greater than 50% reduction in NIH-CPSI pain score at 14 weeks. Other outcomes included total and NIH-CPSI domain scores, International Prostate Symptom Score, peak urinary flow rate, post-void residual urine and adverse effects.

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To investigate the effectiveness of terazosin, an alpha1-adrenoceptor blocking agent, on bladder neck obstruction (BNO), by assessing the urodynamic hydraulic energy profile. Patients, subjects and methods The study included 17 men (mean age 60.1 years, range 24-84), comprising 11 patients with BNO (mean age 66.5 years) and six normal volunteers (mean age 48.1 years). A five-transducer microtip catheter was used to measure the pressure in the bladder and at the bladder neck, and in the membranous and bulbous urethra during voiding. All the subjects then received terazosin, 1 mg/day orally for 2 weeks, and were re-assessed.

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Terazosin, an alpha 1 blocker initially used as an antihypertensive, was approved in 1993 for use in the treatment of benign prostatic hyperplasia (BPH) symptoms. This study was designed to determine the safety and efficacy of terazosin in treating patients with concomitant BPH and hypertension.

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We observed that a substantial proportion of men with LUTS participating in a national prostate cancer screening program were not taking prescription medications for these symptoms. Furthermore, we observed that men taking herbs or vitamin supplements tended to have higher AUA scores. Additional investigation is warranted into the reason some men are not receiving standard prescription medications for LUTS and whether reliance on alternative treatments is playing a role in this phenomenon.

hytrin terazosin dosage

The study comprised a single-blind and randomized design with tamsulosin or terazosin taken once daily for 8 weeks. A total of 98 patients was enrolled, with 72 patients included in the analyses after 4 and 8 weeks. The primary variables assessed were changes in the maximum urinary flow rate Qmax and the total International Prostate Symptom Score (IPSS), with the post-void residual urine volume, 'obstructive' and 'irritative' questions in the IPSS, and the investigators' global assessment of efficacy also determined. The number of patients with a clinically significant response to treatment with tamsulosin or terazosin was determined and defined as those with > 20% improvement from the baseline Qmax or > 20% decrease in total IPSS. Adverse reactions possibly or probably related to study medication were recorded throughout the treatment period.

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Previous studies documented that human bladder cancer cells are sensitive to the apoptotic effects of quinazoline-derived α1-adrenoreceptor antagonists and bladder tumors exhibit reduced tissue vascularity in response to terazosin. More recent evidence suggests that exposure to quinazoline α1-adrenorecptor antagonists leads to a significant reduction in prostate cancer incidence. This retrospective observational cohort study was conducted to determine whether male patients treated with quinazoline α1-adrenoceptor antagonists for either benign prostate hyperplasia (BPH) or hypertension have a decreased risk of developing bladder cancer. Review of the medical records of all male patients enrolled at the Lexington Veterans Administration (VA) Medical Center identified men exposed to quinazoline-based α1-adrenoceptor antagonists (Jan 1, 1998-Dec 31, 2002) for either hypertension and/or benign prostate obstructive symptoms. The whole group of 27,138 male patients was linked to the Markey Cancer Center's Kentucky Cancer Registry (KCR), part of the NCI's Surveillance, Epidemiology, and End Results (SEER) Program, to identify all incident bladder cancer cases diagnosed in this population. Measures of disease incidence, relative risk, and attributable risk were calculated to compare the risk of developing bladder cancer for α1-blocker-exposed versus unexposed men. A two-by-two contingency table of α1-antagonist exposure versus bladder cancer diagnoses was constructed and the relative risk was calculated. Our analysis revealed a cumulative bladder cancer incidence of 0.24% among the α1-blocker-exposed men compared to 0.42% in the unexposed group. Thus, there was a risk difference of -0.0018, which indicates that 1.8 fewer bladder cancer cases developed per 1000 exposed men. Alternatively stated, 556 men would need to be treated with quinazoline α1-blockers to prevent one case of bladder cancer. Exposure to quinazoline α1-blockers thus may have prevented 7 to 8 bladder cancer cases among the 4173 treated men during the study period. The data yield an unadjusted risk ratio of 0.57 (95% CI: 0.30, 1.08) and therefore, men treated with α1-adrenoreceptor antagonists have a 43% lower relative risk of developing bladder cancer than unexposed men (p=0.083). Our inability to determine person-years at risk of developing bladder cancer for each unexposed control patient, was a limitation for calculating an incidence ratio and rate difference. These results offer an initial indication that exposure to doxazosin and terazosin decreases the incidence of bladder cancer. This is the first epidemiological evidence that the anti-tumor action of quinazoline-based α1-antagonists may potentially translate into a protective effect from bladder cancer development.

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To assess function of urinary retention and irritative symptoms from the lower urinary tracts in patients after radical prostatectomy for local prostatic cancer.

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A total of 90 patients with premature ejaculation and LUTS were enrolled to the study after excluding sexual disorders, prostatitis and benign prostatic hyperplasia. The patients were divided into two groups. Sixty patients in group 1 were treated with terazosine 5 mg daily for a month. Patients were followed monthly and questioned for their ejaculation problem. The results were classified as cure, improvement and ineffective. If patients showed improvement and ineffectiveness, the treatment was continued with 10 mg daily for the following month. Group 2 was included 30 patients, and placebo was applied for a month. At the end of this period, in patients who did not show any improvement, terazosine 10 mg was started.

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To summarize the urinary, rectal, and sexual symptoms occurring during the first 12 months following 125I prostatic implantation.

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To investigate the effects of terazosin and melatonin on isolated rabbit bladder strips after partial bladder outlet obstruction and determine responses to agonist-induced contractility and changes in oxidant-antioxidant system.

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For this purpose tissue specimens were obtained from 10 patients suffering from BPH, the primary cultures of prostate epithelium were established and CD133 MicroBeads sorting was prepared. Both, CD133(+)/CD133(-) co-cultures and CD133(+) cells were incubated with different concentration of doxazosin for 12 h. Cell viability and apoptosis was estimated with Annexin V-FITC.

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The authors concluded that treatment with terazosin was associated with greater peak urinary flow rate and lower symptom score than treatment with placebo. There was no variability of efficacy of terazosin as a result of prostrate volume, and measurement of prostrate volume was not essential before initiation of therapy.

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This article describes a novel model system in which the interactions of the stromal and epithelial components of the prostate gland can be determined.

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Total ginsenosides and the antihypertensive agents differentially regulated SP and the metabolic pattern in SHRs. Total ginsenosides caused a progressive and prolonged reduction of SP and markedly normalized the perturbed metabolism with 14 of 27 (51.8%) markers of hypertension which were regulated toward normal. Total ginsenosides also reduced free fatty acids' level toward normal levels. In contrast, captopril, amlodipine and terazosin efficiently depressed SP, but had little effect on metabolic perturbation with only 8 (29.6%), 4 (14.8%), and 4 (14.8%) markers, respectively, which were regulated.

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We have shown recently that norepinephrine stimulates muscle cell hypertrophy in primary cultures from the neonatal rat ventricle and that this stimulation is not blocked by the beta adrenergic antagonist propranolol. The present study was done to define the adrenergic specificity of the myocyte hypertrophic response to norepinephrine. 90% pure, single-cell cultures of nongrowing myocytes were maintained in serum-free medium 199 with transferin and insulin. Myocyte size was quantitated 48 h after addition of adrenergic agents, by measuring cell volume, cell surface area, and cell protein. L-norepinephrine increased myocyte size to a maximum 150% of control; half-maximum effect was obtained at a concentration of 0.2 microM. This increase in cell size was inhibited by the nonselective alpha adrenergic antagonist phentolamine and by the alpha 1 adrenergic antagonists prazosin and terazosin; it was not inhibited by propranolol or by the alpha 2 adrenergic antagonist yohimbine. The beta adrenergic agonist isoproterenol did not increase cell size. Thus, norepinephrine-stimulated hypertrophy of cultured rat myocardial cells is an alpha 1 adrenergic response.

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To observe the clinical effect of Tiaoshen Tonglin Decoction (TTD)) on chronic prostatitis syndrome (CPS) and its effects on urinary flow rate (UFR), uric acid (UA) content and pH value in expressed prostate secretions (EPS).

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Patients treated with terazosin obtained similar improvement in peak and average uroflow, independent of the size of the prostate.

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The treatment related rates of dizziness, asthenia, postural hypotension and syncope were 19%, 6%, 6% and 1%, respectively. Of these adverse events only postural hypotension was associated with orthostatic blood pressure changes. The incidence of asthenia, dizziness and postural hypotension was not significantly greater in patients with a systolic blood pressure decrease of 5 or greater and less than 5 mm. Hg, respectively.

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We describe a 71-year-old male patient who developed acute myocardial infarction (AMI) due to a dynamic left ventricular outflow tract obstruction induced by terazosin. After receiving terazosin, the patient had a syncope followed by angina. The electrocardiogram showed Q waves and ST segment elevation in the precordial and inferior leads. Coronary angiography evidenced a chronically occluded left anterior descending artery. Doppler-echocardiography revealed apical akinesia, hyperdynamic basal segments, systolic anterior motion of the mitral valve (SAM) and dynamic left ventricular outflow tract obstruction. Therapy with intravenous fluids and atenolol resulted in marked clinical improvement. Acute myocardial infarction resulted from low coronary perfusion pressure in a patient with a chronically diminished coronary reserve.

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Each group comprised 50 patients. Pharmacologic dilation in both α(1)-ARA groups was statistically significantly less than in the no α1-ARA group 1 month preoperatively, immediately before surgery, and postoperatively (P=.001, P<.0005, and P<.0005, respectively). The IFIS incidence differed significantly between the tamsulosin and other α(1)-ARA groups and the no α1-ARA group (P<.0005 and P=.017, respectively) and between the tamsulosin group and the other α1-ARA group (P=.027). On regression analysis, the hazard ratio for overall IFIS incidence was 3.8 in the other α(1)-ARA group (P=.012) and 10.1 in the tamsulosin group (P<.0005). Pupil size was inversely related to IFIS incidence and severity (P<.0005). A dilated pupil of 7.0 mm or smaller had 73% sensitivity and 95% specificity for predicting IFIS (P=.0001).

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Literature searches were conducted using EMBASE (1974 to January 2014), International Pharmaceutical Abstracts (1970 to January 2014), and MEDLINE (1946 to January 2014) to identify clinical trials evaluating the effects of α-adrenergic blockers in the treatment of women with lower-urinary-tract dysfunction. Bibliographies from relevant research articles were also reviewed for inclusion.

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In comparative trials with its IR counterpart (alfuzosin ER 10 mg QD vs alfuzosin IR 2.5 mg TID), alfuzosin ER was an equieffective once-daily AARA. No comparative trials of alfuzosin ER with the SR (BID) formulation or with other AARAs were identified. Food has been found to exert a clinically important effect by enhancing the bioavailability of the ER formulation; thus, the drug should be taken on a full stomach. Hepatic impairment has been found to significantly delay the elimination of alfuzosin IF, which constitutes a contraindication to use of the ER formulation. Renal impairment does not appear to exert clinically important effects on the pharmacokinetics of alfuzosin ER. Adverse events with alfuzosin ER include dizziness, upper respiratory tract infection, headache, and fatigue, with hypotension and syncope reported rarely. Concurrent use of inhibitors of the cytochrome P450 3A4 isozyme (eg, ketoconazole, diltiazem, cimetidine, atenolol) can significantly elevate serum concentrations of alfuzosin and enhance its pharmacodynamic effects.

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To assess the reversibility of left ventricular hypertrophy (LVH) during terazosin therapy, we studied changes in LVH as determined by echocardiography and humoral parameters before and after three and 12 months of terazosin monotherapy in ten patients. Blood pressure decreased within four weeks of treatment and the antihypertensive effect was sustained throughout 12 months. Left ventricular mass index decreased significantly from 126 +/- 22 g/m2 to 109 +/- 24 g/m2 and 98 +/- 23 g/m2 after 3 and 12 months respectively. Interventricular septum (11.2 to 9.8 and 9.0 mm) and posterior wall thickness (10.4 to 9.6 and 8.8 mm) also decreased significantly, whereas left ventricular internal dimensions were unchanged. Total peripheral resistance decreased significantly after initiation of treatment, but cardiac output did not change. Plasma volume, plasma renin activity and plasma noradrenaltine levels were unchanged by terazosin. Thus, terazosin monotherapy reversed LVH associated with decreased peripheral resistance. It is suggested that the reversal of LVH by terazosin is mainly due to the reduction in ventricular afterload and that humoral factors are not involved in its mechanism.

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To corroborate this speculation, we screened prototypical α(1)-antagonists such as prazosin, doxazosin, and terazosin for antagonism of angiotensin II on rat aortic strips. We also examined the AT(1) antagonists losartan, valsartan, and olmesartan for their possible antagonistic effect, on contractions of rat aortic strips induced by phenylephrine.

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This study suggests that terazosin is well tolerated and effective in longterm treatment of patients with BPH.

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Literature retrieval was accomplished by searching MEDLINE (2000-December 2007) using the terms intraoperative floppy iris syndrome (IFIS), adrenergic alpha-antagonist(s), tamsulosin, doxazosin, terazosin, and/or alfuzosin. In addition, reference lists from identified publications were reviewed to identify additional reports and studies of interest.

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The binding and functional properties of doxazosin were characterized in the canine brain and human prostate. 3H-Doxazosin binding sites were characterized in canine brain and human prostate homogenates using saturation experiments. The binding of 3H-doxazosin in the canine brain was consistently saturable and of high affinity. The mean equilibrium dissociation constant (Kd) and density (Bmax) of 3H-doxazosin binding sites in the canine brain were 0.19 nM and 2.17 fmol/mg wet wt, respectively. The binding of 3H-doxazosin in human prostate homogenates was not consistently linear owing to a relatively high proportion of nonspecific doxazosin binding sites. The mean Kd and Bmax of 3H-doxazosin binding sites in the prostate determined from the saturation experiments yielding linear Scatchard plots were 0.2 nM and 0.51 fmol/mg wet wt. The pharmacology of doxazosin binding sites was further characterized in the canine brain using competitive binding experiments. The rank order of IC50corr values for norepinephrine, clonidine, yohimbine, terazosin, and prazosin indicated that doxazosin binds selectively to alpha 1 and alpha 2 adrenergic binding sites. The relative affinity of unlabeled doxazosin for alpha 1 and alpha 2 binding sites in the human prostate was determined by displacing 125I-Heat or 3H-rauwolscine with varying concentrations of unlabeled doxazosin. The affinity of doxazosin for alpha 1 binding sites in the prostate adenoma was approximately 100-fold greater than its affinity for alpha 2 binding sites. The potency of doxazosin for inhibiting phenylephrine-induced contractions in the prostate indicated that prostate smooth muscle contraction is mediated by alpha 1 adrenoceptors.

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To investigate the incidence and degree of overanticoagulation associated with commonly used oral antibiotics.

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Identification of an endogenous noradrenergic drive contributing to GG activation in wakefulness and non-REM sleep, but not REM sleep, is important given the prevalence and clinical significance of sleep-induced hypoventilation and obstructive sleep apnea in humans and the potential for pharmacologic treatment.

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hytrin dosing 2017-04-07

The study inclusion criteria were a < 25% reduction in nocturia using the International Prostate Symptom Score question 7, a < 25% reduction in nocturia using the frequency-volume chart, and/or nocturia > or = 2/night (according to the frequency-volume chart) after 4 weeks of terazosin therapy. A total of 72 patients were entered into the study and treated with 25 mg of hydrochlorothiazide and 4 mg of terazosin once daily for 4 weeks. Of the 72 eligible men, 53 completed the buy hytrin online study.

hytrin 2 mg 2016-06-26

Only a few studies have evaluated the efficacy of alpha-blocking agents in combination with other classes of antihypertensive agents, especially in patients not adequately controlled by monotherapy. As alpha-blockers have an additional beneficial effect on serum lipids, it seems buy hytrin online reasonable to use them instead of beta-blockers or diuretics in insufficiently treated hypertensive patients with hyperlipidemia.

hytrin bph dose 2016-03-07

Real-life clinical practice shows that significantly fewer BPH patients prescribed a 5ARI experienced serious complications associated with the progression of BPH buy hytrin online compared with those prescribed an alpha-blocker.

hytrin tablets 2mg 2015-02-14

Luminal alpha-adrenergic agonists alter ileal water, ion, and glucose transport by a local mechanism. This study tested the hypothesis that luminal adrenergic agents modulate ileal transport selectively, via buy hytrin online specific alpha 1 and alpha 2 receptors. Absorption studies (n = 72) were performed on dogs with 25-cm ileal Thiry-Vella fistulas (TVF). Perfusion with (14C) polyethylene glycol was used to calculate absorption of water, ions, and glucose from the TVF. Experiments included four 1-hour periods. Agonists used were phenylephrine (alpha 1), clonidine (alpha 2), and norepinephrine (alpha 1 > alpha 2 and beta). Antagonists used were terazosin (alpha 1) and yohimbine (alpha 2). Phenylephrine and norepinephrine caused significant increases in water and ion absorption (p < 0.05). Clonidine caused significant decreases in water, ion, and glucose absorption (p < 0.05). Terazosin and yohimbine had no effect alone. Terazosin prevented the proabsorptive effect of phenylephrine and norepinephrine, and yohimbine blocked the prosecretory effect of clonidine. Yohimbine significantly increased the norepinephrine-induced proabsorptive effect. Luminal alpha-adrenergic agents selectively modulate ileal transport. Alpha 1-receptor activation causes a proabsorptive response, whereas alpha 2-receptor activation causes a prosecretory response. The combination of a luminally administered mixed alpha- and beta-adrenergic agonist (norepinephrine) with alpha 2 receptor blockade (yohimbine) may prove useful in pathologic secretory states such as intestinal transplants, diabetic diarrhea, or diarrhea-associated endocrinopathies.

hytrin highest dose 2017-05-09

alpha-Antagonists (AAs) are ineffective in some men with lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH). Transurethral resection of the prostate (TURP) may be required. Reasons for AA failure and surgical outcomes buy hytrin online in these patients have not been reported.

hytrin reviews 2016-02-04

There were no significant side effects throughout the entire treatment. The first 7-year old boy however developed some dizziness when the dose of terazosine was increased buy hytrin online to 2 mg (after 4 weeks of administrating 1 mg), and this disappeared immediately when the dosage was reduced back to 1 mg daily. The urgency symptoms improved in both boys after 3 weeks of 1 mg terazosine. The secondary enuresis in the 11 year-old boy resolved after 2 months of 2 mg terazosine.

hytrin 10 mg 2017-05-10

Molecular cloning studies have revealed the existence of three subtypes of alpha 1-adrenergic receptors. However, the link between any individual subtype and its functional role in the body has remained elusive. In an effort to bridge the gap between molecular biology and pathophysiology, we have chosen a model smooth muscle system, the human prostate, and investigated the role of alpha 1 subtypes in this tissue. To determine which alpha 1-adrenergic receptor subtype mediates the contractile response of the human prostate, we first studied the pharmacological properties of three cloned human alpha 1 subtypes (alpha 1a/d, alpha 1b, and alpha 1c). Prazosin, terazosin, doxazosin, alfuzosin, and abanoquil showed no selectivity for the human alpha 1 subtypes. WB-4101 and 5-methylurapidil showed a rank order of potency of alpha 1c > alpha 1a/d > alpha 1b. Indoramin and (+)-niguldipine were selective for the alpha 1c-adrenergic receptor, with at least 10-fold lower affinity at either alpha 1a/d or buy hytrin online alpha 1b subtypes. SK&F104856 was found to be 6-fold more potent at the alpha 1a/d receptor subtype than at alpha 1b- or alpha 1c-adrenergic receptors. We next determined the potency of these antagonists to inhibit the phenylephrine-induced contraction of human prostatic tissue in vitro. The potencies of indoramin, 5-methylurapidil, and SK&F104856 to inhibit the contractile response and to displace [3H]prazosin from the cloned human alpha 1c subtype were similar. Our data suggest that the alpha 1 receptor that mediates the contraction of human prostate smooth muscle has the pharmacological properties of the cloned human alpha 1c-adrenergic receptor. The findings of the present study suggest that selective alpha 1c-adrenergic receptor antagonists may be clinically more efficacious and better tolerated agents for the treatment of symptomatic benign prostatic hyperplasia.

hytrin 5 mg 2017-02-26

Men participating in the 2001 and 2002 Prostate Cancer Awareness Week screening for prostate cancer were given a self-administered questionnaire. The questions were designed to gather background health information and to determine the use of prescription medications for lower urinary tract symptoms (LUTS), as well as the use of herbal and vitamin supplements. In addition, the AUA-SS and Sexual buy hytrin online Health Inventory for Men score were calculated for each participant in the study.

hytrin drug medication 2016-09-07

Six placebo-controlled trials (including two unpublished series) involving 996 patients provide the database buy hytrin online for this evaluation. Six hundred thirty-six patients received terazosin from 1 to 20 mg daily for a total of 229 patient-years of exposure to terazosin. The most common final dose of terazosin was 10 mg once daily.

tab hytrin 2mg 2015-08-07

We investigated regulation of the cardiac L-type calcium channel by intracellular ATP and by alpha 1-adrenergic agonism using single adult guinea pig ventricular cells and the whole-cell patch clamp method. Inclusion of 5 mM ATP in the patch clamp pipette prevented calcium current rundown but did not increase the maximal magnitude of the slow inward calcium current (ICa). During beta 1-adrenergic blockade with 10 microM (-)-propranolol, cells preincubated with 1 microgram/ml pertussis toxin for 2-5 h exhibited a rapid twofold increase in buy hytrin online ICa after rupture of the membrane patch when 5 mM ATP was present in the patch clamp pipette. In the absence of ATP, the increase in ICa did not occur. In pertussis toxin-treated cells, 100 microM (-)-phenylephrine inhibited the augmentation of ICa. This inhibitory effect was blocked by 100 nM terazosin, a selective alpha 1-antagonist. The inhibitory effect of alpha 1-adrenergic agonism was not mediated by cAMP-dependent phosphodiesterase since incubation with 100 microM (-)-phenylephrine did not augment the activity of this enzyme. We conclude that regulation of the L-type calcium channel in cardiac cells is complex, and is dependent on a pertussis toxin-sensitive substrate, ATP, and an alpha 1-adrenergic receptor. The marked increase in ICa after pertussis toxin treatment in the presence of ATP indicates significant inhibition of ICa by a pertussis toxin substrate, presumably the guanine nucleotide inhibitory protein (Gi) in the basal state. The inhibitory action of (-)-phenylephrine in pertussis toxin-treated cells is consistent with modulation of ICa by an alpha 1-adrenergic receptor not coupled to Gi.

hytrin overdose 2015-08-12

The alpha1-blockers doxazosin and prazosin induce the apoptosis of cardiomyocytes cultured in vitro by buy hytrin online a mechanism that is independent of alpha1 blockade and calcineurin.

hytrin open capsule 2016-09-22

Premature ejaculation (PE) is the most common sexual disorder in men and studies reported prevalence up to buy hytrin online 30% (1, 2). PE is not a life-threatening medical condition but it influences the quality of life (QoL).

hytrin drug classification 2015-12-30

We performed a secondary analysis of data from the VA Cooperative Study Program Trial in which 1,229 men with BPH 45 to buy hytrin online 80 years old were randomly assigned to receive terazosin, finasteride, combination or placebo.

hytrin 2mg capsules 2017-03-28

Terazosin is effective in the treatment of sympathetically maintained pain when given once daily because of a long elimination half-time and a long duration of action. This buy hytrin online may encourage better patient compliance than do other alpha antagonists of shorter effective duration.

hytrin generic brand 2017-03-25

The prescribing and usage patterns of two antihypertensive agents, terazosin (Hytrin) and enalapril maleate (Vasotec) were analyzed and compared over a 6-month study period, using data from the PDS Alpha Data Base. The study analyzed several variables for both physician prescribing patterns and patient responses. Overall, the two agents performed equally well during the study period, with 6 Topamax 100mg Medication -month retention rates (% of patients who continued to take the same medication) of approximately 60%. Although both drugs are judged to be good candidates for first-line antihypertensive therapy, it was observed during the study that family practitioners write considerably more prescriptions for terazosin than enalapril, while internists write more enalapril prescriptions. We concluded that these differences in prescribing and usage patterns were largely attributable to the manufacturers' marketing strategies and to how various physicians perceive the two agents, rather than to actual clinical differences between them.

hytrin tablets uses 2017-01-08

Prolonged treatment with beta-blocker carvedilol in combination with ACE inhibitor perindopril may improve the hemodynamic parameters, enhance Mobic Drug Wikipedia Ca(2+) pump activity and increase the density of RyR2 of myocardial SR more effectively than either monotherapy in preventing and treating chronic heart failure following myocardial infarction.

hytrin cost 2016-11-27

Terazosin-treated patients had decreases in Boyarsky obstructive, irritative, and total scores of 3.3 (52%), 1.3 (29%), and 4.6 (42%), respectively, compared with decreases of 0.7 (12%), 0.4 (9%), and 1.1 (11%), respectively, in the placebo group (P < .05). Peak urine flow increased by a mean of 2.6 mL/s (30%) in terazosin- Avapro Generic Name treated patients and 1.2 mL/s (14%) in placebo-treated patients (P < or = .05). Adverse events that differed significantly in the two groups were dizziness (19% in the terazosin group vs 5% in the placebo group) and urinary tract infection (1% in the terazosin group vs 10% in the placebo group).

hytrin and alcohol 2015-09-30

The aim of this study was to compare the efficiency, and safety of alpha blocker drugs in the treatment of patients with premature Botox Treatment Cost ejaculation (PE). Additionally we investigated the quality of life (QoL) in patients with PE who were treated with alpha blocker drugs.

hytrin drug information 2017-12-01

There was a significant dose-effect relationship between SNP and the antiproliferative effects, while Terazosin showed no antiproliferative effects and the combination of SNP and Persantine And Alcohol Terazosin showed no strengthen effects. Terazosin significantly induced apoptosis, but SNP showed no effect on induction of apoptosis, while there were much more effects of inducing apoptosis in the combination of Terazosin and SNP than the Terazosin alone.

hytrin 2mg tablet 2016-05-27

The aim of this study was to compare the impacts of terazosin and tamsulosin, on prostate activity, i.e., serum prostate-specific antigen, total prostate volume (TPV), and transition zone volume (TZV). A total of 90 patients who presented with lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH), ranging in age from 52 to 83 yr (median 65 yr), were included in the study. Patients were given 0.2 mg tamsulosin, 2 mg terazosin, or 4 mg terazosin once daily for an average of 14 months (range, 6-56 months). Subjective (International Prostate Symptom Scores, I-PSS) and objective (maximal flow rate and post-void residual) parameters were assessed both at baseline and at treatment cessation. Serum prostate-specific antigen (PSA) levels were found to be unaffected by treatment (1.2 and 1.3 ng/mL). In total patients, multivariate analysis showed that baseline TPV was the only independent predictor of treatment-related TPV reduction. Moreover, baseline TPV > or =30 Co Diovan Drug g was found to be associated with a higher likelihood of TPV reduction (odds ratio [OR], 3.939; 95% confidence interval [CI], 1.506-10.304; p=0.005), and a baseline TZV of > or =10 g was associated with a 7.1-times greater chance of TZV reduction (OR, 7.100; 95% CI, 2.428-20.763; p<0.001). The same model showed that patients on 2 mg terazosin had a 10.8-fold greater likelihood (OR, 10.770; 95% CI, 1.409-82.323; p=0.022) and that those on 4 mg terazosin had a 9.0-fold greater likelihood (OR, 9.001; 95% CI, 1.724-46.995; p=0.009) of a TZV reduction than those on 0.2 mg tamsulosin. In addition, symptoms improved regardless of prostate activity after taking alpha1-blockers. Our findings suggest that terazosin reduces TZV and demonstrate that the relief of symptoms associated with BPH may not be due to a prostate activity reduction induced by apoptosis in the prostate gland.

hytrin generic names 2016-03-04

The average stone size for groups 1, 2, 3 and 4 was comparable (6.13, 5.83, 5.59 and 5.48 mm respectively). Stone expulsion was observed in 11%, 52.9%, 62%, and 46% in groups 1, 2, 3 and 4 respectively. The average time to expulsion was 10.55 ± 6.21 days in group 1, 7.38 ± 5.55 days in group 2, 7.85 ± 5.11 days in group 3 and 7.45 ± 5.32 days in group 4. Alpha blockers were found to be superior to HBB (p < 0.05).

hytrin medication uses 2015-02-18

Using claims data from a large Medigap plan, we examined the effect of initiating nonselective alpha1-antagonist therapy on the incidence of hypotension-related adverse events likely to be associated with vascular alpha-adrenoreceptor antagonism in patients with BPH.

hytrin tab 2017-06-07

We conducted a meta-analysis of efficacy of tamsulosin 0.2 mg using International Prostate Symptom Score (IPSS), maximal urinary flow rate (Qmax), post-voided residual volume (PVR), and quality of life (QoL). Safety was analyzed using adverse events. Relevant studies were searched using MEDLINE, EMBASE, and Cochrane library from January 1980 to June 2013.

hytrin tablets 2017-09-26

A total of 713 patients with hypertension were evaluated in eight randomized, double-blind, placebo-controlled trials of terazosin administered in single daily doses ranging from 1 to 40 mg. In three of these studies, terazosin or placebo was added to ongoing antihypertensive drug therapy. Patient response was categorized (from excellent to inadequate) according to the change in supine diastolic blood pressure from baseline and the value at the final visit. The distribution of patients in these response categories differed significantly between patients treated with terazosin and those treated with placebo. Overall, 52 percent of terazosin-treated patients in these eight studies, compared with 30 percent of placebo-treated patients, had good to excellent responses. Subgroup analysis revealed that blood pressure response was not dependent on sex or age, although white patients appeared to achieve better responses to terazosin in comparison with placebo than did black patients. These studies demonstrate that terazosin administered once daily, either as monotherapy or in combination with other antihypertensive agents, effectively controls blood pressure in patients with mild to moderate hypertension.