Drug interactions
Cocaine + Methylphenidate
Severity: Major
Cocaine and Methylphenidate: major 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
Both drugs block catecholamine reuptake, so combined use can cause marked hypertension, tachycardia and arrhythmia. Topical medical cocaine has limited systemic absorption, but illicit systemic cocaine use with methylphenidate carries a substantial cardiovascular risk.
What this interaction means in plain words
Cocaine and Methylphenidate can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Cocaine belongs to Central Nervous System; Methylphenidate belongs to Central Nervous System.
Why it happens
Additive inhibition of dopamine and norepinephrine reuptake leading to potentiated sympathetic stimulation.
What to do
Avoid the combination with systemic or illicit cocaine use. With topical cocaine, monitor blood pressure and heart rate and use the lowest effective dose.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Cocaine and Methylphenidate, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Methylphenidate
- Isocarboxazid + Methylphenidate Contraindicated
- Linezolid + Methylphenidate Contraindicated
- Methylphenidate + Phenelzine Contraindicated
- Methylphenidate + Procarbazine Contraindicated
- Methylphenidate + Rasagiline Contraindicated
- Methylphenidate + Safinamide Contraindicated
Other interactions of Cocaine
- Cocaine + Isocarboxazid Contraindicated
- Cocaine + Phenelzine Contraindicated
- Cocaine + Procarbazine Contraindicated
- Amitriptyline + Cocaine Major
- Bisoprolol + Cocaine Major
- Citalopram + Cocaine Major
Frequently asked questions
Can I take Cocaine with Methylphenidate?
MediHelp rates the interaction as major. Cocaine and Methylphenidate can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs block catecholamine reuptake, so combined use can cause marked hypertension, tachycardia and arrhythmia. Topical medical cocaine has limited systemic absorption, but illicit systemic cocaine use with methylphenidate carries a substantial cardiovascular risk.
How serious is the interaction between Cocaine and Methylphenidate?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination with systemic or illicit cocaine use. With topical cocaine, monitor blood pressure and heart rate and use the lowest effective dose.
What other medicines interact with Methylphenidate?
MediHelp also lists interactions of Methylphenidate with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Methylphenidate page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
