title: Heart drug with 'viagra side-effect'.
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000008:administration & dosage*; D006801:Humans; D018783:Impotence, Vasculogenic / Q000188:drug therapy*; D008297:Male; D020108:Nicorandil / Q000008:administration & dosage*; D010726:Phosphodiesterase Inhibitors / Q000494:pharmacology; D010879:Piperazines / Q000494:pharmacology; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D016896:Treatment Outcome
chemical_list: D000889:Anti-Arrhythmia Agents; D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D020108:Nicorandil; D000068677:Sildenafil Citrate