Alpha-GPC(L-Alpha-Glycerylphosphorylcholine) is a compound that is a clinically proven precursor to the neurotransmitter acetylcholine. This natural choline compound has gained a lot of popularity in the fitness industry for its athletic improving effects. It is also being studied as a potential treatment for Alzheimer's disease and other dementias.
L-Tyrosine is a compound that is a clinically proven precursor to the neurotransmitters: dopamine, norepinephrine, and epinephrine. It is an essential amino acid, meaning that the body cannot produce it on its own. It must be obtained through either diet or supplementation. There are many different forms of the amino acid like N-Acetyl-L-Tyrosine, but the most effective form of it is pure L-Tyrosine.
L-Theanine is a compound that is a clinically proven precursor to the neurotransmitters GABA(Gamma-Aminobutryic Acid) and glycine. L-Theanine is a very popular supplement in both the fitness industry and mental health industry. It cannot be obtained through diet and is most prevalent naturally in green teas and matcha teas. It is most effective when taken as a supplement and paired with caffeine. Additionally it has been clinically proven to reduce cortisol levels (similarly to Ashwagandha) and increase BDNF levels (similarly to CBD).
5-HTP (5-Hydroxytryptophan) is a compound that is a clinically proven precursor to the neurotransmitter serotonin. 5-HTP has become a very popular supplement in the mental health industry for its profound effects on depression and obesity related to depression. One very important note is that anyone on an anti-depressant (especially SSRIs) should steer clear of this supplement due to the risk that it could more than likely induce a rare but fatal condition called serotonin syndrome.
L-Cysteine is a compound that is a clinically proven precursor to the neurotransmitters glutamate and glutathione. The most effective form of this supplement is NAC(N-Acetylcysteine). NAC has become a very important supplement due to its use in hospitals for liver and lung detoxification. In fact the FDA is attempting to make it illegal to sell this compound over the counter as a supplement due to its profound pharmaceutical effects, so get it while you still can!