The disposition of a 25 mg single oral dose of desipramine was investigated in five rapid and four slow hydroxylators of debrisoquin before and during oral administration of 1200 mg cimetidine daily. AUC and elimination half-life of desipramine increased during cimetidine administration in rapid but not in slow hydroxylators. This was the result of a decrease in overall clearance. The urinary recovery of 2-hydroxydesipramine was significantly decreased in rapid hydroxylators during cimetidine administration. We conclude that cimetidine inhibits the metabolism of desipramine in rapid but not in slow hydroxylators.
Differences in the inhibitory effect of cimetidine on desipramine metabolism between rapid and slow debrisoquin hydroxylators.
SPINA, Edoardo
1987-01-01
Abstract
The disposition of a 25 mg single oral dose of desipramine was investigated in five rapid and four slow hydroxylators of debrisoquin before and during oral administration of 1200 mg cimetidine daily. AUC and elimination half-life of desipramine increased during cimetidine administration in rapid but not in slow hydroxylators. This was the result of a decrease in overall clearance. The urinary recovery of 2-hydroxydesipramine was significantly decreased in rapid hydroxylators during cimetidine administration. We conclude that cimetidine inhibits the metabolism of desipramine in rapid but not in slow hydroxylators.File in questo prodotto:
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