Supplement·Interactions·Reviewed June 9, 2026
MDMA interactions.
MDMA has 20 documented interactions in the NutriStack database: 20 to avoid or watch closely. The full list, with what each pairing does, is below.
MDMA at a glance.
A quick, data-grounded summary. The full table is below.
MDMA has 20 documented interactions in the NutriStack database: 20 to avoid or watch closely. The full list, with what each pairing does, is below.
Everything that interacts with mdma.
Every supplement and medication in the NutriStack database with a documented interaction with this substance, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| 5-HTP | Contraindicated | Taking 5-HTP with MDMA sharply increases the risk of serotonin syndrome, a potentially life-threatening state of excess serotonergic activity with... details → |
| Amphetamine/Dextroamphetamine | Contraindicated | MDMA is a substituted amphetamine with strong serotonin, norepinephrine, and dopamine releasing effects. Combining it with... details → |
| Citalopram | Contraindicated | Citalopram blocks the serotonin transporter MDMA uses to release serotonin, blunting the subjective effect while still permitting serotonergic load.... details → |
| Desvenlafaxine | Contraindicated | Desvenlafaxine blocks serotonin and norepinephrine reuptake, and MDMA forces serotonin and norepinephrine release through the same transporter... details → |
| Duloxetine | Contraindicated | Duloxetine directly interferes with MDMA pharmacology at serotonin and norepinephrine transporters. In a controlled human study, duloxetine reduced... details → |
| Escitalopram | Contraindicated | Escitalopram blocks the serotonin transporter that MDMA uses to release serotonin, blunting MDMA's intended effect while still producing... details → |
| Fluoxetine | Contraindicated | MDMA produces its effects by reversing the serotonin transporter; fluoxetine blocks that transporter. The result is unpredictable blunting of MDMA's... details → |
| L-Tryptophan | Contraindicated | L-Tryptophan combined with MDMA raises the risk of serotonin syndrome by supplying additional serotonin precursor on top of MDMA's... details → |
| Lisdexamfetamine | Contraindicated | Lisdexamfetamine produces dextroamphetamine exposure, and MDMA adds serotonergic and sympathomimetic stimulation. Co-use can increase risk of... details → |
| Methylphenidate | Contraindicated | Methylphenidate and MDMA have a documented human pharmacodynamic interaction. In a controlled crossover study, the combination did not add desired... details → |
| Paroxetine | Contraindicated | Paroxetine blocks the serotonin transporter MDMA uses to release serotonin, and paroxetine is also a potent CYP2D6 inhibitor - the enzyme that... details → |
| Pseudoephedrine | Contraindicated | Pseudoephedrine can add to MDMA's stimulant cardiovascular effects. Controlled human studies show MDMA increases blood pressure, heart rate, and... details → |
| Rizatriptan | Contraindicated | MDMA causes large serotonin release and can trigger severe serotonin toxicity and hyperthermia. Rizatriptan is a serotonin receptor agonist, so... details → |
| Sertraline | Contraindicated | MDMA causes massive serotonin release by reversing the serotonin transporter (SERT), and sertraline blocks SERT - the same protein MDMA needs to... details → |
| Sumatriptan | Contraindicated | MDMA causes a large serotonin release and can produce severe serotonin toxicity and hyperthermia. Sumatriptan is a serotonin receptor agonist, so... details → |
| Tramadol | Contraindicated | MDMA releases and blocks reuptake of serotonin, and tramadol also inhibits serotonin reuptake while lowering the seizure threshold. Combining them... details → |
| Venlafaxine | Contraindicated | MDMA releases large amounts of serotonin and norepinephrine through monoamine transporters, while venlafaxine blocks serotonin and norepinephrine... details → |
| Alcohol | Conflict | Combining MDMA with alcohol increases dehydration, cardiovascular strain, and impaired judgment, and alcohol can mask MDMA's perceived effects while... details → |
| SAMe | Conflict | SAMe has serotonergic and mood-elevating activity that can add to MDMA's serotonin release, increasing the risk of serotonin excess when the two are... |
| St. John's Wort | Conflict | St. John's Wort both adds to serotonergic load and induces drug-metabolizing enzymes, so combined with MDMA it can raise serotonin syndrome risk... details → |
The full mdma profile.
Benefits, dosing by goal, forms, and the cited evidence for this supplement.
Common mdma questions.
Quick answers drawn from the table above.
What interacts with MDMA?
In the NutriStack database, MDMA has 20 documented interactions with other supplements and medications. The most notable include 5-HTP, Amphetamine/Dextroamphetamine, Citalopram, Desvenlafaxine, and Duloxetine.
What should you not take with MDMA?
MDMA is flagged against 20 substances in the database, including 5-HTP, Amphetamine/Dextroamphetamine, Citalopram, Desvenlafaxine, Duloxetine, and Escitalopram. Review these with a clinician before combining, especially alongside prescription medications.
Can you take MDMA with 5-HTP?
NutriStack classifies the MDMA and 5-HTP pairing as contraindicated: Taking 5-HTP with MDMA sharply increases the risk of serotonin syndrome, a potentially life-threatening state of excess serotonergic activity with agitation, high... Do not combine. If symptoms such as high fever, confusion, severe muscle stiffness, or rapid heartbeat develop, seek emergency medical care...
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