QUESTION & ANSWER
What is the best H2 blocker?
There are four drugs in the H2 blocker class—cimetidine (Tagamet), famotidine (Pepcid), nizatidine (Axid), and ranitidine (Zantac). Each works about as well as the other. Choosing one is largely a matter of preference. However, famotidine and nizatidine are least likely to cause problems with drug interactions.