Take Optimal Amounts of Omega-3s. According to Dr. Newmark, kids between four and eight years old should take between1,000-1,500 mg. a day. Older kids should get 2,000-2,500 mg. daily. Look for a product that has twice the amount of EPA to DHA—the two main types of omega-3's. Liquid or capsule forms of omega-3 fatty acids are best.
For Kids With ADHD, Some Foods May Complement Treatment. And it concludes that changing a child's diet is usually not enough to effectively treat attention deficit hyperactivity disorder. 1. Eat a protein-rich breakfast. 2. Cut back on sugary treats and processed foods. 3. Fish oil and omega-3 supplements.