Nature's fusions colostrum collagen peptides - unflavored (30 servings) why colostrum collagen? our grass-fed, usa raised colostrum type i & iii collagen combination not only helps stregthen your immune system and gut, but also your joints, skin, hair and muscles. Why nutri? at nutri we believe in making the highest quality and most effective products on the market, so that you can be confident that you're getting the best of the best. Immune support muscle recovery joint, skin & hair. Nature's fusions colostrum+ collagen peptides - unflavored (30 servings)