Specialist retrovirus, le Dr Etienne de harrow, known for his dissident views on AIDS responds to the publication of “Guide 4000 medicaments, useless or dangerous”. According to him, nothing to suggest that the AZT molecule, recommended in the treatment of AIDS, either “drug excellence”. This molecule is even highly toxic to the cell respiratory system. The authors of the guide 4 000 pharmaceuticals “should explain” the reasons which have made them classify as a beneficial drug AZT.