I have been exercising for the last three weeks and had noticed knee pain. It was getting so bad it was slowing me down during my workouts. I had noticed that when I would stand up from sitting my knees would hurt. I went to my local gnc store and asked what would be best to take for this issue. I left with Womens ultra joint vitapak. I have been taking these religiously every single day. When I had started out taking the supplements, it was almost like magic... My knee pain was getting exceptionally better. So I thought- problem solved! That wasn't exactly true because for a week now (religiously taking these supplements every single day) my knee pain has since come back. After sitting, after walking around and stopping, exercise. I might add that my mother, brother, and my moms brother have all had knee problems. My uncle having surgery on each knee.