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Drug interactions

Diphenoxylate-atropine + Methylenedioxymethamphetamine

Severity: Moderate

Diphenoxylate-atropine and Methylenedioxymethamphetamine: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

MDMA is a stimulant with serotonergic and sympathomimetic effects, and its interaction with diphenoxylate-atropine is not well characterized. Atropine can add to MDMA-related tachycardia and hyperthermia by reducing sweating, so the combination may carry some risk, though this is mainly theoretical.

What this interaction means in plain words

Diphenoxylate-atropine and Methylenedioxymethamphetamine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Evidence level: Low

Why it happens

No established interaction; possible additive tachycardia and impaired heat dissipation from antimuscarinic and sympathomimetic effects.

What to do

Counsel patients to avoid MDMA, as it is illicit and carries inherent risk. Monitor heart rate and temperature if exposure occurs.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Diphenoxylate-atropine with Methylenedioxymethamphetamine?

MediHelp rates the interaction as moderate. Diphenoxylate-atropine and Methylenedioxymethamphetamine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. MDMA is a stimulant with serotonergic and sympathomimetic effects, and its interaction with diphenoxylate-atropine is not well characterized. Atropine can add to MDMA-related tachycardia and hyperthermia by reducing sweating, so the combination may carry some risk, though this is mainly theoretical.

How serious is the interaction between Diphenoxylate-atropine and Methylenedioxymethamphetamine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients to avoid MDMA, as it is illicit and carries inherent risk. Monitor heart rate and temperature if exposure occurs.

What other medicines interact with Diphenoxylate-atropine?

MediHelp also lists interactions of Diphenoxylate-atropine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Diphenoxylate-atropine page.

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