Pyrovalerone can be an inhibitor with the transporters for selected monoamine neurotransmitters, such as dopamine and norepinephrine, protecting against their uptake.1,2 ?-Pyrrolidinopentiophenone (hydrochloride) is an analog of pyrovalerone, lacking only the methyl group that is found around the phenyl moiety of pyrovalerone. Like pyrovalerone, th