1. We have evaluated the effectiveness and safety of minoxidil in moderately hypertensive out-patients. Eight patients were treated with hydrochlorothiazide and minoxidil for 5 months. The only female patient developed slight, reversible facial hair growth. In the other seven patients there was a moderate decrease in blood pressure. There were only minimal side-effects. Mild exertional tachycardia and a mean increase in body weight of 0·5 kg was found, but no oedema or signs of cardiac insufficiency were observed. No abnormalities were seen during routine blood tests.

2. This study shows that minoxidil combined with a diuretic may be successfully used in treating moderately hypertensive male patients.

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