Usual Adult Dose for Hypertension:
Initial dose: 1 mg orally once a day at bedtime
Maintenance dose: 1-5 mg orally once a day.
Maximum dose: 20 mg per day.
Usual Adult Dose for Benign Prostatic Hyperplasia:
Initial dose: 1 mg orally once a day at bedtime.
Maintenance dose: Increased in a stepwise fashion to 2 mg, 5 mg, or 10 mg once a day to achieve desired improvement of symptoms.
 Detailed Terazosin dosage information
