My 5 yr old has always been quite hyper and extremely bad tempered, His tantrums had us virtually house-bound. About two months ago I read an article about the use of fish oils in treating tantrums/hyperactivity and the feed-back was really positive. We decided to give it a go,so I bought some Omega 3 capsules in superdrug ( the cheapest I could find) and the results have been amazing, he is a completey different child. He is so contented and easy to reason with and the change happened within a fortnight of him starting to take the tablets. We had previously researched the whole 'e' number thing, but when we did, we discovered his intake was fairly low anyway. I would definitely recommend omega 3 but check with your gp before hand.