title: Atazanavir (Reyataz): new recommendations if combined with tenofovir (Viread) -- and warning on Viagra, Cialis, and Levitra.
abstract: The FDA published new information on drug interactions that patients taking Reyataz should know.
mesh_terms: D000225:Adenine / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood / Q000627:therapeutic use*; D000069446:Atazanavir Sulfate; D002243:Carbolines / Q000008:administration & dosage; D004346:Drug Information Services; D004347:Drug Interactions; D004359:Drug Therapy, Combination; D015658:HIV Infections / Q000188:drug therapy; D006801:Humans; D007093:Imidazoles / Q000008:administration & dosage; D009842:Oligopeptides / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D063065:Organophosphonates; D009943:Organophosphorus Compounds / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use*; D010879:Piperazines / Q000008:administration & dosage; D011687:Purines; D011725:Pyridines / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D018894:Reverse Transcriptase Inhibitors / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D000068677:Sildenafil Citrate; D013450:Sulfones; D000068581:Tadalafil; D000068698:Tenofovir; D014227:Triazines; D000069058:Vardenafil Dihydrochloride
chemical_list: D002243:Carbolines; D007093:Imidazoles; D009842:Oligopeptides; D063065:Organophosphonates; D009943:Organophosphorus Compounds; D010879:Piperazines; D011687:Purines; D011725:Pyridines; D018894:Reverse Transcriptase Inhibitors; D013450:Sulfones; D014227:Triazines; D000069446:Atazanavir Sulfate; D000069058:Vardenafil Dihydrochloride; D000068581:Tadalafil; D000068698:Tenofovir; D000068677:Sildenafil Citrate; D000225:Adenine