1.   And it occurs not only on the skin, but internally too, when viruses invade the body or the stomach is irritated by spoiled food.

2.   Aspirin can also irritate the stomach.

3.   Aspirin mixed with alcohol is going to cause you to have a really bad gutache, not to mention irritate your stomach.

4.   He described a new anti-inflammatory drug that does not severely irritate the stomach, a common but not universal side effect of such drugs.

5.   He beat a sinus infection with high-powered antibiotics, but the drugs irritated his stomach.