Phenylethylamine, sometimes called PEA, functions within the body as a both a neurotransmitter and a neuromodulator. It is a naturally occurring substance, famously present in foods such as chocolate. It’s often touted as a “feel good” chemical, and chocolate isn’t the only substance that has been linked to it; THC and alcohol can both increase phenylethylamine levels in the brain. In the body, PEA blocks dopamine transmitters, leading to a pleasant sensation and an increase in the users ability to focus and concentrate. As a result, it’s often considered a nootropic, or smart drug, and properly resides in the family of other amines, although not as harsh in effects.

As a nutritional supplement ingredient, it’s often used to enhance the properties of other stimulants and to boost concentration.