Acetyl tyrosine is suppose to help us with making noradrenaline and dopamine, so could potentially help us with cognitive issues and give us more energy. Acetyl version is suppose to be absorbed better then normal tyrosine. I have jarrows brand acetyl tyrosine which is doses at 350mg a cap. Today i have taken just one cap on an empty stomache so it doesnt have to compete with other amino acids to get inside this little brain of mine. I also waited 45min before eating. My intention is not to use this on a daily basis but for days when i really need a boost, sort of like a pepp pill i suppose. I will say my head feels abit clearer, im not bounding with energy but im encouraged enough to try it again, maybe two capsulse next time. We will see how long it lasts. 350mg is a low dose and recently read where a man uses 2-3000mg a day which has helped him with parkinsons, the dopamine from acetyl tyrosine is helping him. I have used normal tyrosine in the past and didnt really get much out of it and that was using 2000mg at a time. Time will tell i guess. cheers!!!