NutriStack
MDMA and Methylphenidate, contraindicated.
Methylphenidate and MDMA have a documented human pharmacodynamic interaction. In a controlled crossover study, the combination did not add desired psychoactive effects but did increase cardiovascular and adverse effects compared with either drug alone. This creates avoidable risk for hypertension, tachycardia, hyperthermia, anxiety, and arrhythmias, especially with redosing or hot environments.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
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At a glance
- Substances
- MDMA and Methylphenidate
- Pair type
- Contraindicated
- Evidence (highest tier)
- Moderate
- Source citations
- 3 sources
- Stack Score effect
- −25 to your Stack Score (per scored contraindication row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Contraindicated · Moderate evidence
Contraindicated
What is happening. Methylphenidate and MDMA have a documented human pharmacodynamic interaction. In a controlled crossover study, the combination did not add desired psychoactive effects but did increase cardiovascular and adverse effects compared with either drug alone. This creates avoidable risk for hypertension, tachycardia, hyperthermia, anxiety, and arrhythmias, especially with redosing or hot environments.
Mechanism. Methylphenidate blocks dopamine and norepinephrine transporters, while MDMA enters monoamine neurons through transporters and promotes serotonin, norepinephrine, and dopamine release. The combination increases autonomic and endocrine stress without reliably increasing desired subjective effects.
Recommendation. Do not use MDMA while taking methylphenidate. Do not take extra MDMA if the effect feels blunted or different. Seek emergency care for high fever, confusion, severe agitation, chest pain, fainting, seizure, or a racing or irregular heartbeat.
Sources (3)
- Hysek CM, Simmler LD, Schillinger N, et al. Pharmacokinetic and pharmacodynamic effects of methylphenidate and MDMA administered alone or in combination. Int J Neuropsychopharmacol. 2014;17(3):371-381. PMID 24103254
- Sarparast A, Thomas K, Malcolm B, Stauffer CS. Drug-drug interactions between psychiatric medications and MDMA or psilocybin: a systematic review. Psychopharmacology (Berl). 2022;239(6):1945-1976. PMID 35253070
- Green AR, Mechan AO, Elliott JM, O'Shea E, Colado MI. The pharmacology and clinical pharmacology of 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy"). Pharmacol Rev. 2003;55(3):463-508. PMID 12869661
Stack Score
How this pair moves the number.
Effect on the composite score
If both MDMA and Methylphenidate are in the same stack, this pair applies −25 to your Stack Score (per scored contraindication row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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