L-PHENYLALANINE is an amino acid that is essential for the human body and can be synthesized by the body or consumed in the diet. L-phenylalanine is converted by the body into various chemicals, including dopamine, norepinephrine, and adrenaline. In relation to athletes, L-phenylalanine is sometimes used as a dietary supplement. It is believed that it can help improve mood, concentration and physical performance. L-phenylalanine is also used to treat depression because it is a precursor to serotonin, which is thought to be a neurotransmitter associated with the regulation of mood and emotions. In dietary supplements, pre-workout boosters are usually added.

Dosage: 500 mg to 2 grams per day.