Type II collagen peptides and glycosaminoglycans from grass-fed, pasture-raised sources.
Sometimes I don't feel pretty. So I take this stuff for more luxurious hair, strong nails, and youthful-looking skin. Okay, not really, but the naturally-occurring glycosaminoglycans found in this supplement do provide those benefits.
No, I take collagen – bovine tracheal cartilage in this case (yummy) – because it makes my barbell-abused joints, tendons, and ligaments feel better. There's even some evidence that it helps with post-exercise recovery and immune system regulation. – Chris Shugart