The anti-HIV drugs we daily take came on the market long ago : in 1987 for AZT, and in 1996 for the protease inhibitors. The laboratories undertook the 3 necessary tests before the drugs were allowed to be distributed : phase 1, which concerns biological and clinical resistance, toxicity and dosage ; phase 2 - medical efficacy and optimal dosage ; and phase 3 - often a comparative study of the effective results of the drugs, including side effects... At the end of this third study (...)
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