The pills contained two blood pressure drugs, a cholesterol medicine and aspirin. Many people can’t afford or don’t stick with taking so many medicines separately, so doctors think a polypill might help. A previous study testing one in India found it lowered cholesterol and blood pressure. The new study is much larger and gives stronger evidence because it tracked heart attacks, strokes and other problems ‐ not just risk factors.
It involved about 6,800 people in Iran, ages 50-75, some with previous heart problems and others without them. All got advice on healthy lifestyles and half also were given polypills. After five years, 6% of those in the pill group had suffered a heart attack, stroke or heart failure versus 9% of the others. That worked out to a 34% lower risk with the polypill, and a 22% lower risk after researchers took into account other heart drugs that participants were taking.
People who took the polypill most faithfully, at least 70% of the time, had even bigger reductions in heart risks.
The benefit mostly seemed to come from lowering cholesterol; blood pressure didn’t significantly change. Side effects were similar in both groups. Some who developed a cough while on the polypill were switched to another version that substituted one of the four drugs. All of the drugs are cheap generic medicines now.