Depends what you want it for. Women use centrophenoxine to improve their skin (its DMAE and a plant sterol). Nootropics wise combine it with stuff like choline, inositol, alpha-GPC or GDP-choline (citicholine). If you occassionally use GABA you've almost got the complete works of neurotransmittors, oh and ALCAR. In fact ALCAR above GABA.
Its probably considered "neuro-protective" and if you combine if with other nootropics it becomes potent (piracetam).