There are specific nutrients that taken properly have almost or greater than pharmacological effects.
however its takes a lot of self experimentatuon to see what works or makes things worse.
o specidically had elsucces in the past deoending on circumstances withe the use of smart stacking of specidic doses of
caffeine univers anti fatgue and focus be smart w it
l tyrosine
l phenylalanine
these on an emptystomach and ddepening on dosing can prime neurotransmiter pump, hels w fatigue and focus fir some, will wire up some people like a space suttle, again dosing is important, usually at least a couple grams of ea
dimethy amino ethanol or DMAE (its an good acetylcholine reuptake inhibitor), this enhances all of the above effects but again fir certain individuals , make do thenopposite Depends on how your brain is wired.
Be careful w these, do your research , these also work extremely well as pre exercise staciks, its how i found it helped my piano practice , mainly at times if high stress and tried w less sleep etc