Side effects of Fosamax cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue using Fosamax.

More common Fosamax side effects may include: Abdominal pain, bone and joint pain, constipation, diarrhea, indigestion, muscle pain, nausea

Less common Fosamax side effects may include: Abdominal distention, acid backup, difficulty in swallowing, esophageal ulcers, gas, headache, stomach ulcers, vomiting

Rare Fosamax side effects may include: Changes in taste, esophageal blockage or perforation, eye pain, hives, inflammation of the stomach, mouth sores, muscle cramps, rash, skin redness, swollen face and throat.

Why should Fosamax drug not be prescribed?

You should not take Fosamax; if the calcium level in your blood is low. Avoid Fosamax if it causes an allergic reaction.

Special warnings about Fosamax medication:

Fosamax is not recommended for women on hormone replacement therapy, or for women with kidney problems.

Be sure to tell your doctor if you have trouble swallowing or have any digestive disease. Fosamax may cause problems in your esophagus such as inflammation, ulcers, bleeding, and in rare cases, blockage or perforation.