Hytrin: profile and news






Saw Palmetto Wilts as Benign Prostate Hyperplasia Treatment  Feb 9, 2006
...placebo, and provide a clinical benefit similar to that of a 5α-reductase [eg Proscar (finasteride)] inhibitor or alpha-blocker [eg, Hytrin (Terazosin]," the ... - CNN

Saw Palmetto Wilts as Benign Prostate Hyperplasia Treatment  09 Feb 2006
...placebo, and provide a clinical benefit similar to that of a 5α-reductase [eg Proscar (finasteride)] inhibitor or alpha-blocker [eg, Hytrin (Terazosin]," the ... - CNN

Drug company did no wrong, jury finds  Dec 8, 2005
In that 2001 lawsuit, the state alleges that Abbott paid a competitor to delay the release of a generic version of their drug Hytrin, which is used to treat ... - Charleston Gazette,

Label Change for Flomax Following Report of Cataract Surgery ...  Nov 22, 2005
...prostate medications prior to surgery. Other prostate drugs in this class include Hytrin, Cardura, and Uroxatral. In addition to having ... - DG News

Prostate problems, treatments  Aug 15, 2005
Alpha-blockers (brand names include Flomax, Cardura and Hytrin) relax the neck of the bladder, making it easier to urinate. ... - Arizona Republic,

July 15 deadline for Hytrin claims  Jul 7, 2005
The Attorney General’s Office announced last week a July 15 deadline for consumers who purchased the brand-name prescription drug Hytrin and are eligible for ... - Nashville City Paper

Attorney General Hatch Announces Minnesota Consumers May File For ...  Jul 13, 2005
July 7, 2005 - Attorney General Mike Hatch announced today that Minnesota consumers who purchased the brand-name prescription medication Hytrin are eligible ... - PharmaLive.com (press release)

Abbott Labs Settles Lawsuit  Jul 8, 2005
The lawsuit states that $30 million is now available to be returned to consumers who took the drug Hytrin. "The way that the consumers ... - WISC

Deadline nears for claims in class-action drug settlement  Jul 11, 2005
The $30.7 million settlement came in a lawsuit filed on behalf of consumers who purchase the drug Hytrin, which doctors prescribe to treat hypertension and ... - University of Wisconsin-Madison University Communications

Rival says drug tops Abbott’s  Jul 12, 2005
...greater improvement in symptoms of prostate enlargement after four days of treatment than patients who got terazocin, the ingredient in Abbott's Hytrin drug. ... - Crain's Chicago Business

Around town  Jul 6, 2005
...announced Tuesday. People who bought the drug Hytrin between Oct. 15, 1995, and March 7, 2005, are eligible for a refund from a $30.7 million settlement. ... - Marietta Times <**results**>

July 15 deadline for Hytrin claims  Jul 7, 2005
The Attorney General’s Office announced last week a July 15 deadline for consumers who purchased the brand-name prescription drug Hytrin and are eligible for ... - Nashville City Paper

Tennesseans eligible for refund of Hytrin purchases  Jun 29, 2005
Consumers who bought brand-name prescription drug Hytrin are eligible for refunds through a $30.7 million settlement of a federal lawsuit. ... - Nashville Business Journal

Buyers Of Hypertension, Enlarged Prostate Drug Hytrin Should Make ...  Jun 12, 2005
Consumers who purchased the brand-name prescription medication Hytrin are eligible for refunds from a $30.7-million settlement agreement, Maine Attorney ... - All American Patriots (press release)

Wisconsin consumers share in $30.7M Hytrin settlement  Jun 6, 2005
Wisconsin is among 18 states that will share in a $30.7 million settlement agreement with manufacturers of the prescription medication Hytrin. ... - Milwaukee Business Journal

Abbott Labs Settles Lawsuit  Jul 8, 2005
The lawsuit states that $30 million is now available to be returned to consumers who took the drug Hytrin. "The way that the consumers ... - WISC

In brief  Jun 13, 2005
Wisconsin consumers who purchased a prescription medication Hytrin are eligible for refunds from a $30.7 million nationwide settlement. ... - Fond du Lac Reporter

Around town  Jul 6, 2005
...announced Tuesday. People who bought the drug Hytrin between Oct. 15, 1995, and March 7, 2005, are eligible for a refund from a $30.7 million settlement. ... - Marietta Times

Living with benign prostatic hyperplasia  Jun 21, 2005
...interactions. Older alpha blockers, such as terazosin (Hytrin) and doxazosin (Cardura), were originally used to treat high blood pressure. ... - Gilroy Dispatch (subscription),

Consumers Eligible for Refunds in Hytrin Antitrust Settlement  Jun 20, 2005
Consumers who purchased the brand-name prescription medication Hytrin are eligible for refunds from a $30.7-million nationwide settlement agreement. ... - Consumer Affairs

Refunds Available To Mainers Who Bought Drug Hytrin  Jun 4, 2005
AUGUSTA, Maine -- Maine's attorney general said consumers who bought the brand-name prescription drug Hytrin are eligible for refunds. ... - WMTW,

Wisconsin consumers share in $30.7M Hytrin settlement  Jun 6, 2005
Wisconsin is among 18 states that will share in a $30.7 million settlement agreement with manufacturers of the prescription medication Hytrin. ... - Milwaukee Business Journal,

North Dakotans Who Bought Drug Hytrin May be Able to get Refunds  Jun 9, 2005
Attorney General Wayne Stenehjem says consumers who bought the brand-name prescription drug Hytrin may be eligible for refunds. ... - KFYR-TV,

Living with benign prostatic hyperplasia  Jun 21, 2005
...interactions. Older alpha blockers, such as terazosin (Hytrin) and doxazosin (Cardura), were originally used to treat high blood pressure. ... - Gilroy Dispatch (subscription),

In brief  Jun 13, 2005
Wisconsin consumers who purchased a prescription medication Hytrin are eligible for refunds from a $30.7 million nationwide settlement. ... - Fond du Lac Reporter,

Floridians who bought Hytrin may get refunds over delay in generic ...  Apr 1, 2005
Florida consumers who purchased the brand-name prescription medication Hytrin could be eligible for refunds from a $30.7 million nationwide settlement ... - Sun-Sentinel.com

Abbott, Geneva Pharmaceuticals to pay $30.7 mln in settlement  Mar 31, 2005
...court approval. The commercial version of the drug, Hytrin, is manufactured by Abbott, which will pay $18 million in the case. The ... - MarketWatch

Your Health  Mar 7, 2005
...a good year to work. Another, called Hytrin, tells Arnold to relax those muscles and let the poor urethra go. And now some new procedures ... - Richmond News,


Other information


Indication
For the treatment of symptomatic benign prostatic hyperplasia (BPH) and also for hypertension.

Pharmacology
Terazosin, classified as a quinazoline, is similar to doxazosin and prazosin. As an alpha-adrenergic blocking agent, terazosin is used to treat hypertension and benign prostatic hypertrophy (BPH). Terazosin produces vasodilation and reduces peripheral resistance but in general has slight effect on cardiac output. Antihypertensive effect with chronic dosing is usually not accompanied by reflex tachycardia.

Mechanism Of Action
Terazosin selectively and competitively inhibits vascular postsynaptic alpha(1)-adrenergic receptors, resulting in peripheral vasodilation and a reduction of vascular resistance and blood pressure. Unlike the nonselective alph-adrenergic blockers phenoxybenzamine and phentolamine, terazosin does not block presynaptic alpha(2)-receptors and, hence, does not cause reflex activation of norepinephrine release to produce reflex tachycardia.

Drug Category
Antineoplastic Agents; Adrenergic alpha-Antagonists; Platelet Aggregation Inhibitors; ATC:G04CA03

Brand Names/Synonyms
Abbott 45975; Blavin; CHEMBANK1722; Flumarc; Fosfomic; Heitrin; Hytracin; Hytrin; Hytrinex; Itrin; Terazosin; Terazosin Hcl; Terazosin Hydrochloride; Terazosina [Inn-Spanish]; Terazosine; Terazosine [Inn-French]; Terazosinum [Inn-Latin]; Trazosin Hcl; Urodie; Vasocard; Vasomet; Vicard

Dosage Forms
TABLET

Absorption
Essentially completely absorbed in man (90% bioavailability).

Interactions
-->Interactions for Terazosin:

In controlled trials, terazosin has been added to diuretics, and several beta-adrenergic blockers; no unexpected interactions were observed. Terazosin has also been used in patients on a variety of concomitant therapies; while these were not formal interaction studies, no interactions were observed. Terazosin has been used concomitantly in at least 50 patients on the following drugs or drug classes: 1) analgesic/anti-inflammatory (e.g., acetaminophen, aspirin, codeine, ibuprofen, indomethacin); 2) antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole); 3) anticholinergic/sympathomimetics (e.g., phenylephrine hydrochloride, phenylpropanolamine hydrochloride, pseudoephedrine hydrochloride); 4) antigout (e.g., allopurinol); 5) antihistamines (e.g., chlorpheniramine); 6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol); 7) corti-costeroids; 8) gastrointestinal agents (e.g., antacids); 9) hypoglycemics; 10) sedatives and tranquilizers (e.g., diazepam).

Use with Other Drugs

In a study (n=24) where terazosin and verapamil were administered concomitantly, terazosin’s mean AUC0-24 increased 11% after the first verapamil dose and after 3 weeks of verapamil treatment it increased by 24% with associated increases in Cmax (25%) and Cmin (32%) means. Terazosin mean Tmax decreased from 1.3 hours to 0.8 hours after 3 weeks of verapamil treatment. Statistically significant differences were not found in the verapamil level with and without terazosin. In a study (n=6) where terazosin and captopril were administered concomitantly, plasma disposition of captopril was not influenced by concomitant administration of terazosin and terazosin maximum plasma concentrations increased linearly with dose at steady-state after administration of ter-azosin plus captopril.

 


Chemical IUPAC Name
[4-(4-amino-6,7-dimethoxy-quinazolin-2-yl)piperazin-1-yl]-tetrahydrofuran-2-yl-methanone

Chemical Formula
C19H25N5O4

Half Life
12 hours

Drug Type
Approved Drug

# Accession No
APRD00667

CAS Registry Number
63590-64-7


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