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Cimetidine is a histamine type 2 blocker, which also binds to the androgen receptor to inhibit its function." However, this antiandrogen activity of cimetidine is weak, and the clinical benefit of its use in women with hirsutism is minimal. Thus, this drug is not recommended for the treatment of hyperandrogenism.
Vasculitis [3] Alpidem (Ananxyl) 1995. Worldwide. Not approved in the US, withdrawn in France in 1994 [4] and the rest of the market in 1995 because of rare but serious hepatotoxicity. [3][5] Alosetron (Lotronex) 2000. US. Serious gastrointestinal adverse events; ischemic colitis; severe constipation. [2]
Zantac was first marketed in 1981, [7] and it was described in 1989 as "one of the most expensive drugs on the market", [8] and "the world's biggest-selling prescription drug". [9] Addiction to taking it ("a habit") was how some of its users described Zantac. [10] The focus of Glaxo, its manufacturer, was to gain market share "from Zantac ...
Cimetidine was the prototypical histamine H 2 receptor antagonist from which later drugs were developed. Cimetidine was the culmination of a project at Smith, Kline & French (SK&F; now GlaxoSmithKline) by James W. Black, C. Robin Ganellin, and others to develop a histamine receptor antagonist that would suppress stomach acid secretion.
Ranitidine has 10% of the affinity that cimetidine has to CYP450, so it causes fewer side effects, but other H 2 blockers famotidine and nizatidine have no CYP450 significant interactions. [ 131 ] Ranitidine was introduced in 1981, and was the world's biggest-selling prescription drug by 1987.
1-Testosterone. Tetrahydrogestrinone. Trenbolone. Drugs with similar structures and biological activity are also banned because new designer drugs of this sort are always being developed in order to beat the drug tests. Caffeine, a stimulant known to improve performance, is currently not on the banned list.
Unlike cimetidine, the first H 2 antagonist, famotidine has a minimal effect on the cytochrome P450 enzyme system, and does not appear to interact with as many drugs as other medications in its class. Some exceptions include antiretrovirals such as atazanavir, chemotherapeutics such as doxorubicin, and antifungal medications such as itraconazole.
Cetirizine. Cetirizine is a second-generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria (hives). [5] It is taken by mouth. [6] Effects generally begin within thirty minutes and last for about a day. [6]