The pharmacokinetics of minocycline have been studied after single intravenous infusions and repeated oral doses to human subjects with varying degrees of renal impairment. There was no evidence of reduced drug clearance with reduced renal function after intravenous doses although there appeared to be an increase in the tissue distribution of antibiotic in the body in uremia. After identical multiple oral dosage regimens serum levels of antibiotic were comparable in normal and mildly uremic subjects. There was no evidence of renal toxicity in normal or uremic subjects with the repeated dosage regimen used.
1 This was a multicentre, double-blind, parallel study in 216 patients with mild to moderate (supine diastolic blood pressure = 95-115 mm Hg) essential hypertension. 2 After a 4-week placebo washout, patients were randomized to placebo or lisinopril 1.25, 5, 20 or 80 mg once daily for 6 consecutive weeks. Supine and erect blood pressure was measured 24 h postdose at the end of weeks -2, 0, 2, 4, and 6. 3 There was a linear dose-response relationship for both supine and erect blood pressure. Diastolic blood pressure reductions in the lisinopril 20 and 80 mg day-' groups were significantly greater than in the placebo or lisinopril 1.25 and 5 mg day-' groups. 4 Lisinopril, at doses up to 80 mg day-', was well tolerated.
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