Does Aspirin Cause Stomach Discomfort?
Aspirin frequently causes stomach discomfort, including pain, nausea, heartburn, and indigestion. This affects up to 20-30% of regular users, often starting within hours of taking it.[1][2]
Why Does Aspirin Irritate the Stomach?
Aspirin inhibits COX-1 enzymes, reducing protective mucus and bicarbonate production in the stomach lining. It also directly damages the mucosa by disrupting cell membranes, leading to erosion or ulcers over time.[3]
How Common Is This and Who Gets It Worst?
Mild discomfort hits 10-25% of low-dose users (e.g., 81 mg daily for heart protection). Higher doses (325-650 mg) raise risks to 50% or more. Older adults, those with prior ulcers, heavy alcohol users, or smokers face higher odds.[1][4]
What Can Reduce Stomach Issues?
Take with food or milk to buffer acid. Enteric-coated or buffered aspirin (with antacids) delays stomach exposure, cutting irritation by 50-70% in studies. Avoid if you have ulcer history—switch to alternatives like acetaminophen.[2][5]
When Does It Turn Serious?
Discomfort can signal gastritis, bleeding, or ulcers. Watch for black stools, vomiting blood, severe pain, or dizziness—seek immediate care. Long-term use triples ulcer risk without protection.[3][4]
Alternatives Without Stomach Problems?