Pindolol--a new beta-adrenergic blocking agent with intrinsic sympathomimetic activity in the management of mild and moderate hypertension.

Pindolol, a well-tolerated noncardioselective beta-adrenergic blocking drug, effectively reduced blood pressure in patients with mild to moderate hypertension without causing orthostatic hypotension. In common with other beta-adrenergic blocking agents, pindolol blocked the normal increase in the standing pulse rate. The drug, however, did not decrease the supine pulse rate, a feature that can be interpreted as evidence of the postulated intrinsic sympathomimetic activity of pindolol.