Abstract
Objective: To compare the efficacy of activated charcoal and gastric lavage in preventing the absorption of moclobemide, temazepam, and verapamil 30 min after drug ingestion.
Methods: In this randomized cross-over study with three phases, nine healthy volunteers received a single oral dose of 150 mg moclobemide, 10 mg temazepam, and 80 mg verapamil after an overnight fast. Thirty minutes later, they were assigned to one of the following treatments: 25 g activated charcoal as a suspension in 200 ml water, gastric lavage (10 × 200 ml), or 200 ml water (control). Plasma concentrations of moclobemide, temazepam, and verapamil were determined up to 24 h.
Results: Activated charcoal reduced the area under the plasma concentration–time curve from 0 h to 24 h (AUC0–24 h) of moclobemide and temazepam by 55% (P < 0.05) and by 45% (P < 0.05), respectively. The AUC0–24 h of verapamil was not significantly reduced by charcoal. Gastric lavage decreased the AUC0–24 h of moclobemide by 44% (P < 0.05), but had no significant effect on that of temazepam or verapamil. The peak plasma concentration (Cmax) of moclobemide, temazepam, and verapamil was reduced by 40%, 29% (P < 0.05), and 16%, respectively, by activated charcoal. Gastric lavage did not significantly decrease the Cmax of any of these drugs.
Conclusion: The absorption of moclobemide, temazepam, and verapamil can be moderately reduced by activated charcoal given 30 min after drug ingestion, while gastric lavage seems to be less effective.
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Received: 15 December 1999 / Accepted in revised form: 16 March 2000
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Lapatto-Reiniluoto, O., Kivistö, K. & Neuvonen, P. Efficacy of activated charcoal versus gastric lavage half an hour after ingestion of moclobemide, temazepam, and verapamil. E J Clin Pharmacol 56, 285–288 (2000). https://doi.org/10.1007/s002280000139
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DOI: https://doi.org/10.1007/s002280000139