It's been 6 weeks since I began using this product. I have a lot of pain in my knees from running, I've had this problem for a few years now. I also have a problem in one of my shoulders, I messed it up playing basketball years ago. Within the first few weeks of using this product, my knee pain and my shoulder pain are gone! I cannot believe how quickly this product worked for me! I plan to continue to use this product. I owe NOW a huge thanks for making such a great product at such a good price, also fast shipping from illpumpyouup.com! The only site I buy from – great support and as I said, fats shipping!