Although pet owners know that older dogs experience a certain degree of physical limitations, they often don't realize that the aging process also affects brain function. Intended for dogs aged seven and older, Healthy Brain supplement is a potent mix of antioxidants and phospholipids that helps to support normal brain and nerve function to safeguard your dog's alertness and memory. Healthy Brain contains Phosphatidylserine PS , a naturally occurring phospholipid that has been shown to enhance and restore mental alertness. Additionally, this supplement includes Phosphatidylcholine derived from lecithin which aids in the production of acetylcholine ACh , a neurotransmitter that's vital to proper brain function and assists in memory recall. Active Ingredients per chewable Vitamin A Acetate 1000 IU Vitamin C Ascorbic Acid 100 mg Vitamin E dl Tocopheryl Acetate 50 IU Inositol 30 mg Phosphatidylserine Lecithin 15 mg Polyphenols Green Tea Extract 10 mg Magnesium Oxide 10 mg Phosphatidylcholine Lecithin 5 mg Zinc Oxide 2 mg Copper Sulfate Monohydrate 1 mg Selenium Amino Acid Chelate 7 mcg Inactive Ingredients Beef Liver, Magnesium Silicate, Magnesium Stearate, Natural Pork Flavor, Plant Cellulose, Pork Liver, Silicon Dioxide, Stearic Acid, Sucralose. Made in the USA.