alexa Effect of short-term administration of garlic supplements on single-dose ritonavir pharmacokinetics in healthy volunteers.


Advances in Robotics & Automation

Author(s): Gallicano K, Foster B, Choudhri S

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Abstract AIMS: To evaluate the effect of acute dosing of garlic supplements on the single-dose pharmacokinetics of ritonavir. METHODS: Ten healthy volunteers (five male, five female) were equally randomized in a crossover design to receive 400 mg of a single dose of ritonavir within 10 min after eating breakfast either alone or with 10 mg of Natural Source Odourless Garlic. They received a total of eight doses of garlic extract (2 x 5 mg capsules) taken twice daily for 4 days. Ritonavir and the seventh garlic dose were administered simultaneously. RESULTS: Coadministration of garlic nonsignificantly decreased area under the plasma concentration-time curve (AUC(0, infinity )) by -17\% (90\% confidence interval (CI), -31\% to 0\%; range -46\% to 68\%) and peak plasma concentration of ritonavir by -1\% (90\% CI, -25\% to 31\%; range -51\% to 136\%). CONCLUSIONS: Acute dosing of the garlic capsules over 4 days did not significantly alter the single-dose pharmacokinetics of ritonavir in healthy volunteers. Given the complex effects of both ritonavir and garlic on drug metabolism, the results of our study should not be extrapolated to steady-state conditions, where the possibility of an interaction still needs to be evaluated.
This article was published in Br J Clin Pharmacol and referenced in Advances in Robotics & Automation

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