title: Viagra and grapefruit juice--not a good mix.
mesh_terms: D001628:Beverages; D002957:Citrus; D018565:Food-Drug Interactions; D018023:HIV Seronegativity; D006801:Humans; D008297:Male; D010879:Piperazines / Q000494:pharmacology*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate