I like this product because it helps me run. Before taking this vitamin, I have to take One-A-Day Women's Multivitamin. If I miss taking the One-A-Day Women's Multivitamin, my ankle makes noise and I tend to fall easily. I'm only 41. After taking this vitamin, I no longer have noise in my ankle when I walk. I can also run. I'm thankful for this good aspect of this vitamin. The not so good aspect of it is my stomach become so sensitive. I often throw up. I can't really allocate which type of food makes me throw up; because it varies. I know for sure when I switch from hot food to cold food, I throw up. I didn't have this problem before. When stop taking the vitamin, the throw up issue goes away. I called Perricone and asked which pill does what so that I can just take the calcium part and leave everything out. 3 customer service persons couldn't tell exactly which pill does what. It's really sad. It does cross my mind that the company is hiding something from me. Why can't they tell me flat out?