This is a great, comprehensive joint formula. I combine this with USP Labs Super Cissus and all my joint problems go away. Flex gets rid of the cracking and popping, cissus soothes the connective tissue. Whether you're lifting or not, this combo is hard to beat. Also, I bought Flex, a Pro Source t-shirt, and paid shipping for the same price as VS had Flex for in-store on sale.
October 10, 2012
Sale Price:$ 24.50