I purchased the Brain Booster Pendant for my 14 year old son who has very severe ADHD. In the past, we have tried various medications that have left his body with extremely harmful side effects. Its been such a difficult journey trying to help him become balanced so that he can function to his full potential daily, especially in a school setting. He noticed results right away when wearing the Brain Booster. pendant. We were able to significantly reduce the dosage of his ADHD medication for school he was even able to attend school successfully with no medication at all. For anyone struggling with ADHD, we highly recommend trying the Brain Booster pendant.