Collagen is Amazing
Probably all grass-fed collagen is close to the same, but out of all the comparing, I found this one to be the best value, and donating at least 1% of total sales to charities, makes it even better.  My knees have stopped hurting after a month or so of taking this... and after 2 months, my nails are stronger... lots stronger!  My husband and I go through this stuff fast... so it's on my orders from Amazon a lot.
Rating: 5 stars