While there are many reported side effects of Tagamet, mouth sores is not one of them. The most common listed side effects are diarrhea, headache, gynecomastia (enlarged and painful breasts) and rash. Interestingly, Tagamet, is sometimes useful for treating canker sores. It should be noted however, that the use of Tagamet to treat canker sores is not FDA-approved.
2. Can Zantac deplete sex drive in men?
Zantac, as well as all of the other H2...

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