I am taking Biaxin (clarithromycin) and it is causing me to have awful back pain. What can I take to lessen this back pain?

Stop the drug! If you have new symptoms after starting any drug, there is a chance that it is due to the new med. Sometimes medication side effects can be very serious, sometimes minor. Awful back pain fits into the category of a serious side effect. Call your doctor today, or stop the medicine until you can talk to the person who prescribed it. Get seen for the back pain today, too.