Salmon roe at 50g per dose thrice a week works nicely for me. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5596017/ and https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6399499/. I take it in conjunction with a source of choline and uridine.

I also take 2g of magnesium l-threonate per day. As a stimulant I take phenylpiracetam at 100mg per dose on a per need basis. Semax and selank I take on occasion.

Ice baths have also been very helpful. I'll leave it at that; pm me for further info.