Terazosin Interactions

6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol).

Source: FDA drug label - 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 terazosin plus captopril (see DOSAGE AND ADMINISTRATION ).

Source: FDA drug label - terazosin

10) sedatives and tranquilizers (e.g., diazepam).

Source: FDA drug label - terazosin

7.2 Alpha-adrenergic Antagonists The administration of dutasteride in combination with tamsulosin or terazosin has no effect on the steady-state pharmacokinetics of either alpha-adrenergic antagonist. The effect of administration of tamsulosin or terazosin on dutasteride pharmacokinetic parameters has not been evaluated.

Source: FDA drug label - dutasteride

2) antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole).

Source: FDA drug label - terazosin

6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol).

Source: FDA drug label - terazosin

6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol).

Source: FDA drug label - terazosin

Alpha-adrenergic blocking agents, such as prazosin, terazosin, and doxazosin, can antagonize the effects of midodrine.

Source: FDA drug label - midodrine hydrochloride

This lesion has also been seen with prazosin hydrochloride, another (marketed) selective-alpha-1 blocking agent.

Source: FDA drug label - terazosin

6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol).

Source: FDA drug label - terazosin

Postural hypotension has been reported in patients taking both beta-blockers and terazosin or doxazosin.

Source: FDA drug label - propranolol hydrochloride

2) antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole).

Source: FDA drug label - terazosin

Drug Interactions In controlled trials, terazosin have 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: analgesic/anti-inflammatory (e.g., acetaminophen, aspirin, codeine, ibuprofen, indomethacin); antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole); anticholinergic/sympathomimetics (e.g., phenylephrine hydrochloride, phenylpropanolamine hydrochloride, pseudoephedrine hydrochloride); antigout (e.g., allopurinol); antihistamines (e.g., chlorpheniramine); cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol); corticosteroids; gastrointestinal agents (e.g., antacids); hypoglycemics; sedatives and tranquilizers (e.g., diazepam).

Source: FDA drug label - terazosin hydrochloride

Clinical pharmacology studies have been conducted with co-administration of vardenafil with alfuzosin, terazosin or tamsulosin.

Source: FDA drug label - vardenafil

Clinical pharmacology studies have been conducted with co-administration of vardenafil with alfuzosin, terazosin or tamsulosin.

Source: FDA drug label - vardenafil hydrochloride