A bad taste over mouth irritation

Q. I have a problem that has continued for about three months now. I have a metallic taste in my mouth that affects the flavor of most everything I eat. Sometimes, when I eat certain foods, my whole mouth burns and is sore. I do take Nexium and metoclopramide for bile and digestive problems. I have tried eliminating these, but it does not seem to help at all. I also have osteoporosis and use Forteo as a daily injection. I take a calcium complex and extra vitamin D daily, as well.

I am at a loss as to what could be causing this, and my gastroenterologist now wants me to see an ear-nose-and-throat specialist. Do you have any suggestions?

A. A metallic taste in the mouth can be an early sign of vitamin D overdose. Since you don't say what dosage you take, I cannot be sure whether this is the cause of your problem. Nexium, Forteo and metoclopramide do not list this as a side effect.

Since you have osteoporosis, taking a calcium plus D supplement is recommended.

You should be taking 1,200 to 1,500 milligrams of calcium and 400 to 600 IU of vitamin D daily. Vitamin D can be harmful but only when taken in extremely high amounts, usually over an extended period of time (months or even years).

Your gastroenterologist's referral to an ear-nose-and-throat physician is appropriate. He or she can order testing to determine whether there is some correctable abnormality causing the taste problem.

© 2008, Newspaper Enterprise Assn.