More than 42 research studies have already been undertaken, showing that phosphatidyl serine helps maintain optimum brain function. Allow 3 weeks for full effect. One capsule provides: 500mg Phospholipid Complex containing 100mg Phosphatidyl serine, plus Phosphatidyl choline, Phosphatidyl ethanolamine, Phosphatidyl inositol. Suggested intake: 1-3 capsules a day.