Keep the brain sharp as you age with phosphatidylserine (“PS” for short) supplements. PS is a natural phospholipid compound that the body can make on its own. However, age or deficiencies in B vitamins or essential fatty acids can prevent the body from producing enough PS. PS has been shown to promote memory and cognitive function as well as support mood health. It does this through its role in neurotransmitter function and by maintaining structural integrity of brain cell membranes. Most PS supplements are made from vegetarian sources, namely soy lecithin. Swanson Ultra Phosphatidylserine features three soy-based formulas plus a soy-free formula made from sunflowers.