Personally, I would be hesitant to use a multi-vitamin. They are usually based on the FDA's RDA(Recommended Daily Allowance) This standard is considered as only a recommendation and is very low. It does not have much medical science behind it.

Multi-vitamins tend to have proper dosages for the trace elements but lack enough of vitamin B's, D3, C, E, folic acid, Omega 3's, thiamine, niacin etc for a brain that needs strong nutritional help.

There are a number of resources that will list more appropriate dosages. I have posted my dosages previously. I take about 24 pieces each morning. My dosages are more than would be recommended for a person without any symptoms specific to the brain.