I started mixing Turmeric powder into a drink mix, thinking maybe it would help with a knee injury I've been rehabbing for a few months. About a week ago I went for a 2hr bike workout, and my knee hurt, which was kind of odd, and I realized I'd skipped a couple of days of turmeric. I added it back in, and no discomfort. I hear from others that they have good results too. When my powder is used up I'll be switching to capsules, I understand teeth staining can happen, - not that I'm trying to preserve hollywood white teeth, but less yellow is probably better than more.