Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Ecotrin and call your doctor at once if you have:
ringing in your ears, confusion, hallucinations, rapid breathing, seizure (convulsions);
severe nausea, vomiting, or stomach pain;
bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds;
fever lasting longer than 3 days; or
swelling, or pain lasting longer than 10 days.
Common side effects may include:
upset stomach, heartburn;
drowsiness; or
mild headache.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Ecotrin side effects (more detail)
