title: Limitations to animal data on sildenafil citrate (Viagra) in the human risk assessment.
authors.forename: Franciszek
authors.initials: F
authors.lastname: Burdan
mesh_terms: D000818:Animals; D001757:Blastomeres / Q000187:drug effects*; D002970:Cleavage Stage, Ovum / Q000187:drug effects*; D003307:Copulation; D047108:Embryonic Development / Q000187:drug effects; D005260:Female; D005306:Fertilization / Q000187:drug effects*; D008297:Male; D051379:Mice; D010062:Ovulation Induction; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects*; D010879:Piperazines / Q000009:adverse effects*; D011247:Pregnancy; D011687:Purines / Q000009:adverse effects; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000009:adverse effects*; D013997:Time Factors
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate