title: Doubts surround study results touting polypill's benefits. The experimental pill contains four heart medications.
mesh_terms: D002317:Cardiovascular Agents / Q000008:administration & dosage*; D002318:Cardiovascular Diseases / Q000188:drug therapy* / Q000517:prevention & control*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D004338:Drug Combinations; D006801:Humans; D020521:Stroke / Q000188:drug therapy / Q000517:prevention & control
chemical_list: D002317:Cardiovascular Agents; D004338:Drug Combinations