title: Nitrates and Viagra can be a deadly combination.
mesh_terms: D003326:Coronary Circulation / Q000187:drug effects*; D004357:Drug Synergism; D006801:Humans; D007022:Hypotension / Q000139:chemically induced*; D007548:Isosorbide Dinitrate / Q000009:adverse effects; D008297:Male; D005996:Nitroglycerin / Q000009:adverse effects*; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects*; D010879:Piperazines / Q000009:adverse effects*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D014665:Vasodilator Agents / Q000009:adverse effects*
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate; D005996:Nitroglycerin; D007548:Isosorbide Dinitrate