I have MS and this is what I did. I didn't just have brain fog, I have major impairment to the point where I could not talk, think and even know where I was. So thru many remedy this is what I see cured me.
1. Budwig diet
2. lecithin
3. apple cider vinegar 1T., 2 t. honey, 1/4 t. cayenne and 1 cup of water, drink this 2-3 times a day.
4. take 12 caps of olive leaf, 3 caps 4 times a day (very important)