Phenylalaninol (code name PAL-329), or DL-phenylalaninol, also known as phenylmethylethanolamine or as α-(hydroxymethyl)phenethylamine, is a psychostimulant and monoamine releasing agent (MRA) of the phenethylamine family.

[1][2] It is related to the amino acid phenylalanine and to the phenethylamine psychostimulants β-phenethylamine (phenylethylamine) and amphetamine (α-methylphenethylamine).

[1] Similarly to other dopamine releasers like amphetamine, the drug shows cocaine-like effects and reinforcing properties in rhesus monkeys.

[1][2] The much greater potency of D-phenylalanine in inducing norepinephrine over inducing dopamine release does not appear to interfere with its dopamine release-mediated reinforcing effects.

[1][2] The clinically used stimulant, wakefulness-promoting agent, and well-balanced norepinephrine–dopamine reuptake inhibitor (NDRI) solriamfetol (brand name Sunosi; O-carbamoyl-D-phenylalaninol) is a derivative of phenylalaninol with a carbamoyl substitution at the hydroxyl group of the molecule.