Analgesic Effects of 3-Methylmethcathinone (3-MMC) in Healthy Volunteers

3-Methylmethcathinone (3-MMC) is a synthetic cathinone that has been banned in many countries after emerging as a “legal high”. Although synthetic cathinones currently lack approved medical applications, cathinone and other compounds structurally related to amphetamine have previously demonstrated analgesic effects. This study evaluated the analgesic effects of low to moderate doses of 3-MMC (25, 50, and 100 mg) in a placebo-controlled, crossover trial involving 14 healthy volunteers. Participants were exposed to experimental pain using pressure pain threshold (PPT) and cold pressor test (CPT) paradigms for up to five hours after dosing. The results showed that 3-MMC produced dose-dependent increases in pain threshold and reductions in the subjective experience of pain and unpleasantness. These effects were most pronounced at the 50 and 100 mg doses and remained consistent throughout the 5-hour testing period. Notably, the doses used were low enough to avoid intense psychoactive effects and were associated with a relatively mild side effect profile. These findings suggest that 3-MMC may have potential as a pain-relieving agent. Further research is warranted to explore its analgesic properties in clinical populations and to better understand its safety and efficacy in therapeutic contexts.