mrsD,

Thank you very much for your help and suggestions, but I want to say again that the purpose of getting the Omega 3 from the beginning was to speed up recovery from my PCS, not to treat ADHD. The concussion recovery is much more important to me right now because the PCS worsens my ADHD, sleep quality and many other things.

You are right that 18 grams a day were too much. I stopped taking Omega 3 for now because these huge amounts greatly suppressed my immune system, but I will return to taking it very soon at lower doses.

Regarding of where I got the links of possible damages of Omega 3 daily regimen (almost all of the major risks are attributed to high/very high dose usage), here they are:

Low doses of fish oil may have a mild immunosuppression in humans:
http://www.ncbi.nlm.nih.gov/pubmed/1833105

Polyunsaturated Fats Suppress The Immune System:
http://www.functionalps.com/blog/201...immune-system/

Omega 3 & PUFA’s: What No One Wants To Talk About:
http://metabolichealing.com/omega-3-...to-talk-about/

Thanks for the links, ProAgonist.

PUFAs (polyunsaturated oils) are typically Omega-6's. Used in frying... transfats predominated in modern diets until very recently, being a result of WWII. Margarine contained them because of a lack of butter. These artificial fats are very damaging to the body and mess up the metabolism of "good fats".

Your first link used 6 people, and measured some in vitro factors, which are never considered really valuable. Fish oil blocks the formation of AA which is implicated in vascular damage, and other things. But in babies and children, it is very valuable for some brain development and other things. It is EXCESS AA which is fueled by high Omega-6 content in food (mostly from frying and salad dressings) that becomes problematic. So this study, like many that appear in research today about food and supplements needs to be redone with larger sample sizes, and careful control of the subjects' food intake.

Your Second link discusses PUFA which is mainly excess consumption of Omega-6 oils. (Sunflower, corn, safflower).

Your 3rd link discusses the balance of Omega-3 to Omega-6 which we need as mammals. All Omega-3 or all Omega-6 is not the ratio we need to live normally. We need 1:1 as close as possible.

As far as you are concerned, I see you have ADHD which may respond to fixing any imbalance in your diet. Side effects of headache, depression, dizziness may come from the drugs used to treat ADHD today. These side effects cloud any further symptoms you may have from a concussion.

So my suggestion holds, as far as your turning your attention to researching ADHD further. Wouldn't it be wonderful that you could accomplish both goals, the head injury recovery and the ADHD simply and restore yourself?

Use keywords like
ADHD Omega-3
ADHD essential fatty acids
ADHD supplements
DHA and the brain

We used a product with more DHA in each capsule than EPA.
It was made by Carlson's and called Super DHA. You can buy DHA only supplements today. Some are targeting women with babies, but anyone can use them.( My son only used one of these a day + one flax oil capsule + one regular strength evening primrose capsule--this was a modest amount of all three.)

This one tends to be less expensive:
http://www.enfamil.com/products/enfa...%2Bsupplements

This is one example, there are many others with different costs:
http://www.amazon.com/Source-Natural.../dp/B000GFJKAK

However, since brain inflammation does occur in head injury, some EPA is a good idea.

So the bottom line is to use 2 or 3 regular strength fish oil (fish oil comes in many ways including concentrated forms),
OR
a DHA concentrate
Plus some magnesium (not oxide)
and some B-complex -- B-Right by Jarrow is a very good starting formula.
You need the magnesium and B-complex to metabolize the fish oils properly.

And you need to remove all transfats in processed foods and oils for frying. A good frying substitute is Ghee, which is neutral and not damaging if used prudently. Another oil for cooking is canola.

This is the more sensible route to take.