Hello All, My step mom has been suffering from fibro for several years now. As a result, she has been on several different pain management plans. This included stuff like vicodin. But nothing seemed to work until lately. Her dentist prescribed her tetracyclene to clear up an oral infection. Some how, this magically has cured her fibromyalgia. She hasn't had any pain in four days now. Has anyone ever heard of similar results from tetracycline? Just curious.