Serotonin–norepinephrine–dopamine releasing agent
A serotonin–norepinephrine–dopamine releasing agent (SNDRA), also known as a triple releasing agent (TRA), is a type of drug which induces the release of serotonin, norepinephrine/epinephrine, and dopamine in the brain and body. SNDRAs may produce euphoriant, decongestant, aphrodisiacal, anorectic, nootropic, entactogenic, and/or psychostimulant effects. Drugs of this class tend to have high abuse liability, especially when taken in supratherapeutic quantities.
A closely related type of drug is a serotonin–norepinephrine–dopamine reuptake inhibitor (SNDRI).