I've been asked by several people lately which collagen supplement I prefer the most, and hands down, I have to say @ancientnutr Bone Broth Collagen is my favorite. I have tried a few others, including a marine collagen peptide mix and it was good but for whatever reason, it wasn't as effective. After 20 some years of intense athletics (soccer, boxing, track, running, etc.) I was starting to show signs of tissue loss in my joints and had symptoms of arthritis (at age 27, not good). My mother, actually, suggested I try collagen supplements so I didn't end up in pain while still trying to live a super active lifestyle. A month into regularly adding Ancient Nutrition bone broth collagen into my smoothies and coffee, I started to regain tissue, my joints weren't inflamed, my stamina increased, mental clarity was amazing, my sleep even improved and so did my digestion. I recommend Ancient nutrition all the way!