A daily dose of 81 milligrams of aspirin is often used to prevent heart attacks and strokes in individuals at high risk, according to eMedicineHealth. Individuals at high risk include those who have already experienced a heart attack and individuals with certain medical conditions including coronary artery disease, diabetes, high blood pressure and high cholesterol.
A low-dose of aspirin may also benefit individuals who underwent bypass surgery, angioplasty or atrial fibrillation or those who were diagnosed with peripheral arterial disease, states eMedicineHealth. Aspirin may also help prevent a transient ischemic attack or a second stroke in individuals who previously suffered a stroke.
Another common use for 81 milligrams of aspirin is to relieve pain and reduce inflammation in small dogs, states FidoSavvy.com. The typical dog may take 5 to 10 milligrams of aspirin per pound of body weight. However, an individual should consult with a veterinarian before giving his pet aspirin, and he should only give his pet aspirin for a short period of time.
Though it is less commonly used as such, a daily low-dose of baby aspirin may help prevent pre-eclampsia from developing in pregnant women at high risk for the condition, states WebMD. Those at high risk include women who experienced pre-eclampsia in previous pregnancies and women carrying multiples. Recent research found aspirin decreased the risk of pre-eclampsia in women by 24 percent when administered in small doses daily after the 12 weeks of pregnancy.