Is Collagen the Same as Gelatin? Do They Do the Same Thing? What Are They Good For? Collagen and gelatin are very similar, but they do have several differences. Both have the exact same amino acids and are easily absorbed which means your body is getting nutrients with whichever form you consume. Both collagen and gelatin are made from the bones, skin, and connective tissue of animals. To understand gelatin, we need to start with collagen. Collagen is the primary protein in connective tissue, skin, and bones. You have more collagen in your body than any other type of protein. Collagen makes up 25-35% of the whole-body protein content! Lack of collagen can cause a wide range of problems as you age from wrinkles to decreased joint elasticity. Gelatin is simply the cooked form of collagen and is one of the best and most convenient ways to ingest the important …