cluster headaches
"This works great. I take it for back spasm but also for cluster headaches. I had a stroke several years ago at age 28 years, so I am limited in what medicines I can take due to my medical history. My doctor has me take more than I need for back spasm/pain. I was warned it would make me sleepy and usually does, but in that time my headache/pain goes away almost completely. It is wonderful, especially since it is not a controlled substance. I'd rather take this for both conditions than the 100mg Demerol every 4 hours I was on for several years. Not only don't I miss the injections, but since it does not have the side effects and addiction I can do more since I can think more clearly and function more."