QuattrO3 + PS natural fish oil with omega-3 in r-Triglyceride form for optimal absorption by the body, GLA from evening primrose oil, soy-free phosphatidylserine (Sharp PS Green) and vitamin D3. Vitamin D3 is needed for normal growth and bone development in children. Vitamin D3 is the most physiologically active vitamin D, also known as the sun vitamin. Vitamin D3 is identical to the body's own vitamin D and is used more efficiently than vitamin D2. Phosphatidylserine is an important phospholipid membrane component promoting memory, learning and cognition. There's no fishy taste or smell and kids will love the tutti-frutti flavor.