Summary
The potential for interaction between ibuprofen and two histamine H2-receptor blocking drugs — nizatidine and cimetidine — was investigated in six healthy male volunteers aged 20 to 25 years. Each subject received placebo, nizatidine 300 mg and cimetidine 800 mg orally at 9.00 p.m. daily for six doses in three randomised treatment periods separated by eight days. On the third day of each treatment period ibuprofen 400 mg was administered at the same time and venous blood samples were taken at intervals throughout the night and subsequently up to 84 h after administration.
There was no difference in the area under the plasma concentration-time curve, rate of absorption or half-life of elimination of ibuprofen between the three treatments. The elimination half-life of ibuprofen on placebo was 2.04 h. The elimination half-life of nizatidine on ibuprofen was 1.72 h and that of cimetidine was 3.54 h. The latter is higher than previously reported in normal subjects.
It is concluded that neither H2-blocker affects the kinetics of ibuprofen in man.
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Forsyth, D.R., Jayasinghe, K.S.A. & Roberts, C.J.C. Do nizatidine and cimetidine interact with ibuprofen?. Eur J Clin Pharmacol 35, 85–88 (1988). https://doi.org/10.1007/BF00555513
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DOI: https://doi.org/10.1007/BF00555513