title: Viagra and Cialis for heart failure? Erectile dysfunction drugs may do what no others have done.
mesh_terms: D001341:Autonomic Nervous System / Q000187:drug effects; D002243:Carbolines / Q000008:administration & dosage*; D002317:Cardiovascular Agents / Q000008:administration & dosage*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D009203:Myocardial Infarction / Q000517:prevention & control*; D010879:Piperazines / Q000008:administration & dosage*; D011687:Purines / Q000008:administration & dosage; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000008:administration & dosage*; D000068581:Tadalafil; D014665:Vasodilator Agents / Q000008:administration & dosage*
chemical_list: D002243:Carbolines; D002317:Cardiovascular Agents; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068581:Tadalafil; D000068677:Sildenafil Citrate