What is famotidine, calcium, and magnesium?
Famotidine is in a group of drugs called histamine-2 blockers. Famotidine works by decreasing the amount of acid the stomach produces. Calcium and magnesium are naturally occurring minerals that neutralize acid in the stomach. The combination of famotidine, calcium, and magnesium is used to relieve heartburn associated with acid indigestion and sour stomach. Famotidine, calcium, and magnesium may also be used for conditions other than those listed in this medication guide.