Atr AP Capsule is a medication used to prevent heart attack and stroke by lowering "bad" cholesterol and raising "good" cholesterol levels. It also reduces blood clot formation. It should be taken with food and regularly at prescribed intervals. The treatment duration depends on the condition. Lifestyle changes like a low-fat diet, exercise, and smoking may improve its effectiveness. Common side effects include abdominal pain, indigestion, constipation, joint pain, insomnia, and increased bleeding risk. Patients with liver or kidney disease, bleeding disorders, pregnancy, or breastfeeding should inform their doctor.