Tamsulosin is used in men to treat the symptoms benign prostatic hyperplasia (BPH) which can cause excess difficulties with urination (pain and frequency). By relaxing muscles in the bladder and prostate, urine may flow more easily. This drug is sometimes prescribed by veterinarians for use in companion animals.
Tamsulosin hydrochloride capsules USP are an alpha adrenoceptor antagonist that can be used for ureteral relaxation to facilitate passage of urinary calculi.
Possible Side Effects
Possible side effects include skin rash, urticaria, pruritus, angioedema, and respiratory symptoms.
Drug & Food Interactions
The following drug interactions have either been reported or are theoretical in humans or animals receiving tamsulosin and may be of significance in veterinary patients: Adrenergic blockers, beta blockers, cimetidine, clarithromycin, ketoconazole, sildenafil, terbinafine, warfarin.
Tamsulosin is contraindicated in patients known to be hypersensitive to it. Tamsulosin capsules are manufactured in a sustained-release (beads) presentation to avoid rapid absorption and associated hypotensive effects; therefore they should not be crushed or compounded into an oral suspension.
This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.
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