My daughter has a traumatic brain injury and has been taking fish oil since the accident and I believe it’s been one of the reasons she’s had such a remarkable recovery. She claims that when she slacks off on taking it, she really notices a difference in her mental capabilities. She’s 21 now and had the accident when she was 17. She’ll always take it.
I take fish oil. Some is 1,000mg of fish oil and 1,000IU of vitamin D in the same capsule.