Collagen was the only thing that has helped the Achilles tendonitis that I had for years, precluding me doing the kind of walking I was used to for exercise. It was quite depressing as the orthopod doc said, "Yes, theres a problem seen on xray but most people with this don't even have pain.". (I eventually had had surgery to strengthen the tendon on the other ankle, not something I was eager to do again.)

I have since read that some sports programs are giving it to their athletes with ligament or tendon injuries to help them heal. Wish I'd known about this years back.

I have recently found that brand name makes a big difference in how it tastes. Orgain tastes terrible. Two other brands I've tried since then have been tasteless. (I actually didn't believe the Amazon reviews until I tried them myself.)

I really like Sports Research Dark Chocolate too in heated Fairlife milk for a high protein satisfying drink.