Detailed drug Information for terazosin. Includes common brand names, drug descriptions, warnings, side effects and dosing information. Terazosin is used in men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia or BPH), which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency. Terazosin can cause orthostatic hypotension and syncope, which can be hazardous for patients in occupations that require alertness. This effect can be dramatic after the initial dose. This site uses cookies. By continuing to browse this site you are agreeing to our use of cookies. The most common side effects of Seroquel or Seroquel XR are. headache, agitation, dizziness, drowsiness, weight gain, and; and stomach upset. Terazosin is a prescription drug used to treat high blood pressure and enlarged prostate. Learn about side effects, drug interactions, dosages, warnings, and more. Terazosin hydrochloride is a white, crystalline substance, freely soluble in water and isotonic saline and has a molecular weight of 459.93. HYTRIN tablets (terazosin hydrochloride tablets) for oral ingestion are supplied in four dosage strengths containing terazosin hydrochloride equivalent to 1 mg, 2 mg, 5 mg, or 10 mg of terazosin. Abilify (aripiprazole is the brand name) is a prescription drug used to treat certain mental health disorders (for example, schizophrenia and bipolar disorder). Common side effects are runny nose, anxiety, constipation, and cough. The FDA has issued a black box warning for Abilify that should be reviewed before taking Abilify. How to use Terazosin HCL. Read the Patient Information Leaflet if available from your pharmacist before you start taking terazosin and each time you get a refill. Terazosin hydrochloride is a white, crystalline substance, freely soluble in water and isotonic saline and has a molecular weight of 423.93. Each capsule, for oral administration, contains 1 mg, 2 mg, 5 mg or 10 mg of Terazosin as Terazosin hydrochlolde.