title: Once-daily treatment of essential hypertension with captopril.
abstract: After a 4- to 6-week placebo lead-in period, 382 mild-to-moderate hypertensive patients with diastolic blood pressures remaining between 92 and 109 mmHg were randomized to double-blind treatment with captopril (50 mg q.d.) (94), captopril (50 mg b.i.d.) (97), captopril (50 mg q.d.) plus hydrochlorothiazide (97), and placebo (94). After 4 weeks the captopril dosage was doubled, whereas the hydrochlorothiazide dose remained at 25 mg for an additional 4 weeks. Response to treatment was evaluated by means of blood pressure determinations at the end of 4 and 8 weeks. All three active treatment regimens reduced diastolic blood pressure more than placebo did (p less than or equal to 0.01). Patients receiving captopril with diuretic had a greater decrease in pressure than those receiving captopril alone. The once-daily captopril regimen was as effective as the twice-daily regimen, although the latter employed double the daily dose. Increasing the captopril dosage during the second 4-week period resulted in a minimal addition reduction in blood pressure. Full 24-hour monitoring confirmed that the blood pressure was controlled by once-daily captopril therapy. Captopril given once daily, alone or in combination with hydrochlorothiazide, is efficacious treatment for patients with mild-to-moderate hypertension. The once-daily regimen should further enhance patient compliance.
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure / Q000187:drug effects; D002216:Captopril / Q000008:administration & dosage* / Q000009:adverse effects; D004311:Double-Blind Method; D004341:Drug Evaluation; D004359:Drug Therapy, Combination; D006801:Humans; D006852:Hydrochlorothiazide / Q000627:therapeutic use; D006973:Hypertension / Q000188:drug therapy*; D010919:Placebos; D011897:Random Allocation; D013997:Time Factors
chemical_list: D010919:Placebos; D006852:Hydrochlorothiazide; D002216:Captopril