Naphyrone, also known as O-2482, naphthylpyrovalerone, and branded as NRG-1, Energy-1, and Rave, is a novel, extremely potent synthetic stimulant of the cathinone class that produces states of extreme euphoria, disinhibition, and sexual arousal when administered. Naphyrone is thought to act as as a norepinephrine-dopamine-serotonin reuptake inhibitor (NDRI) as well as a releasing agent, and possesses powerful euphoric stimulant qualities. It was first developed in the early 2000's and later saw larger popularity as a legal alternative to mephedrone when it became illegal in the UK in 2010 and in the US in 2011. Naphyrone is considered extremely dangerous because it has a much higher potency than other drugs in the cathinone class meaning an overdose is more likely to occur when compared to other drugs like mephedrone and MDPV. Tests have shown naphyrone to be 13 times stronger than cocaine and more potent than methamphetamine.