if fish oil could be used to treat ADD than you would have already been told to take it.
the "Natural Remedies" market is based on a ton of logical fallacies(those are the types of arguments that sound valid at a glance but actually don't work) primarily the appeal to nature; suggesting that if something is "natural" that it is automatically good for you, or better for you than something that is "unnatural". the fact is that nature simply dosn't care about you, how else do you explain the existence of things like poison ivy, mistletoe?
the "ad homeniem circumstantial", suggesting that a person is performing an action simply because they would benefit from that action, in this case suggesting that drug companies are bad because the would get a better profit form keeping people sick.
go to a doctor with your questions on how to manage or treat ADD, the stuff they prescribe is required, by the FDA, to actually do what it is claimed to do, unlikely the natural remedies market which dodges FDA regulation by making vague claims.
