I am allergic to caffeine. My doctor prescribed a medician that does not have caffeine in it. However, the first time I had taken the medician I had the same reaction as if it had caffeine in it. When I called the pharmacy I found that there is two versions of the medician, with and without caffeine. So I decided to contact several places to have it tested to check for myself. I am allergic to a lot of things and this way I can protect my health.