Caffeine provokes adverse interactions with 3,4‐methylenedioxymethamphetamine (MDMA, ‘ecstasy’) and related psychostimulants: mechanisms and mediators
British Journal of Pharmacology June 1, 2012 Natacha Vanattou‐saïfoudine, Ruth Mcnamara, Andrew Harkin 60 citations
Consuming caffeine with recreational psychostimulant drugs like MDMA (ecstasy) can cause severe acute adverse reactions and long-term harm. Caffeine increases toxicity by disrupting body temperature regulation, causing heart damage, and lowering the seizure threshold. In rats, co-administering caffeine with MDMA dramatically raises core body temperature, heart rate, and death rates, and worsens long-term damage to serotonin neurons. The interaction involves MDMA boosting dopamine release while caffeine blocks adenosine receptors and inhibits PDE. Similar mechanisms apply to interactions with cocaine, d-amphetamine, and ephedrine. Understanding these mechanisms helps guide interventions for managing severe reactions and drug-related toxicity from combined caffeine and psychostimulant use.