Fish Oil Studies show that omega-3 essential fatty acids (EFAs) may stimulate brain and nerve function, improving ADHD symptoms such as focus and hyperactivity in some patients. Outside of sardines, tuna, and salmon, the best source of EFAs is a fish-oil supplement with roughly a 4:1 ratio of EFAs to omega-6 fatty acids (DHAs)
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.