i have arthritis of spine,spial disease called ankolsen sponditis,fibromyalgia,and list goes on,,i have been on 10 mg perc for this for 12 years now my tolerance built up and cant sleep,in 3times pain,,even resulted to usen lorcete and perc,,i had to oreder lorcet from online dr,,email me if allowed same as my username but @msn.com