http://www.fishoilforkids.org/fish-oil-dosage-for-kids/ The concerns with side effects of other medications are forcing many families to look into more natural treatments for ailments such as ADHD. Over the last 3-5 years, many people are finding that fish oil is helping just as well. Some children are responding to fish oil better than traditional medication. However, some neurologists are still finding the need to lower the fish oil dosage for kids.