I started taking Arthro-5 about 3 years ago, yes it's a big commitment, 6 tablets a day and quite expensive, BUT what a difference to my knees. I have 40 steps up to my front door and I was finding my knee would give way and be quite ***, years of running I guess. Now I have absolutely no *** or movement issues and have happily ordered my next 3 months supply. It's definitely worth the cost and the daily tablet routine :-)