Cons: I bought this for joint pain: I'm an avid runner nearing 60. The first day I took 2 pills, 1 less than recommended, and woke up with four pimples though I'm 57 and haven't seen a zit in four decades. After reading some reviews on other websites, it's a common reaction in some people. I'm going to try to take half a pill a day to see if I can reap some benefits without the pimples since it's supposed to help joint pain. UPDATE: I started taking this with vit C, but only 1 pill a day so far, and I'm not getting the pimples now, so I'm hoping to add two a day more. I also want to comment on the size of these pills. If you have a sensitive gag reflex, these may be too large for you, so just beware. Pros: I've read great things about this supplement for joint pain, hair growth, and skin appearance among others, but I haven't taken it long enough or at the recommended dosage to reap these benefits yet. It also came quickly and packaged well. Finally, it is an incredibly large bottle for the price, though the pill size likely necessitates that to some degree