Kardish Grass-Fed Collagen is a great option for those who want to maintain or improve strength and flexibility throughout their body. Collagen is complex protein that plays an important role in the health of skin, hair, nails, muscles and tendons. This collagen comes from Grass-Fed cattle which means there are no antibiotics or hormones used. It's also free of rBHG (a common hormone found in beef) and free of antibiotics as well as gluten-free, dairy-free and non-GMO. The product comes from a reputable source and has been tested for quality and purity standards.