Summary
The effects of the H-1 receptor blocker terfenadine and the H-2 receptor blocker ranitidine have been experimentally tested in wheals induced with histamine and suxamethonium chloride.
Ranitidine alone in the standard and a four-fold higher dose did not notably reduce the size of the wheal and flare as compared to placebo. As expected, both parameters were markedly reduced by the H-1 antihistamine terfenadine in full and half-dosage. A combination of the two drugs both in “standard” and modified dosage resulted in the greatest reduction in the wheal and flare.
Histamine and suxamethonium-induced wheals reacted in a similar manner to the antihistamines.
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Paul, E., Pfeffer, M. & Bödeker, R.H. Effect of terfenadine and ranitidine on histamine and suxamethonium wheals. Eur J Clin Pharmacol 34, 591–594 (1988). https://doi.org/10.1007/BF00615222
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DOI: https://doi.org/10.1007/BF00615222