Side effects of adult, low-dose aspirin as a blood thinner include upset stomach and heartburn, according to WebMD. More serious, yet less common, side effects may happen, such as easy bruising, difficulty hearing, severe nausea, yellowing skin or unexplained tiredness.
Bleeding from the stomach, abdominal pain and vomit that looks like coffee grounds may also be very serious yet very rare side effects of regular, low-dose aspirin, notes WebMD. Allergic reactions could occur in conjunction with this medication. Sudden vision changes, severe headaches and dark urine represent other serious complications of this medicine.
Aspirin should be taken with food and water to reduce side effects, reports MedlinePlus. People may have to stop taking this medicine before surgery or dental work. When a patient misses a dose, that person simply keeps taking the next dose rather than ingesting an extra pill to make up for the missed one.
Doctors tell heart attack or stroke patients to start daily aspirin therapy, says Mayo Clinic. People who have had stents placed in arteries or had coronary bypass surgery may take aspirin. People with chest pain due to coronary artery disease can also take aspirin to alleviate angina symptoms. Very low doses, such as 75 milligrams, could work for some patients. Doctors typically recommend anywhere from 81 to 325 milligrams of aspirin per day.