It definitely made my joints better. Didn't really do anything for the tendons. I'd say it was worth taking. I bought two cycles of it. I did one about two months ago and I'm saving the other for when I might need it again. My knees and shoulders are 100% better than they were before I started it. The reason I used Ivitamins and not Alin is because Ivitamins takes credit cards. I'm too lazy to deal with all that egold or western union shit.