Why don't we try breaking it into categories?
Special B vitamins that cross blood brain barrier or aid in brain function:
Sulbuthiamine - two thiamines connected with a bridge
Methylcobalamin - alternate beneficial B12 that is more useful to the brain
Pyritinol - 2 B6 connected with bridge, may be harmful to liver so I avoid it
Picamilon - B3 + GABA that crosses Blood Brain Barrier (BBB).
first three have semi-unique mechanisms of action and are quite effective together
Piracetam - improves verbal ability, memory recall, inter-lobe communication
Aniracetam - improves intra-lobe focus/processing, enhances focus
Oxiracetam - also improves spatial reasoning, big +
Pramiracetam -piracetam derivative, stronger
Phenylracetam - PEA+piracetam, much stronger than piracetam along
coluracetam - Some report effectiveness, many report poor stacking and crappy effects
needed for racetams to support cognition
Alpha GPC - effective direct precursor to acetylcholine, the closest and most expensive
Citicholine (CDP choline) - combined with Omega-3 the body makes phosphatylcholine (sp?) which is the neuron receptor for choline within the cell wall
Choline Bitartrate - super-cheap, least effective, requires a lot more for same amount of choline
diverse variety of effects, lots of anti-oxidants and mechanisms of action.
Lion's Mane - Proven to cause Nueral Growth Factor release, enhancing long term cognition substantially
Bacopa - reduces anxiety and improves memory both short and long term
Green Tea Extract - stimulant effects, anti-oxidants
Saffron -anti-cancer, anti-tumor, immuno-modulating, anti-oxidant.
... I don't know many, feel free to add
-building blocks of brain structures
NAC, ... Go to go, things to do. Feel free to add.