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Major risk

Ibogaine and Mirtazapine

Also known as: Remeron, Remeronsoltab

Frequently prescribed in detox for sleep and appetite, so it is often not reported as an antidepressant. Noradrenergic and specific serotonergic action carries serotonin syndrome risk with noribogaine, plus reported QTc prolongation.

Severity

Major risk

Mechanism

Serotonergic activity (serotonin syndrome)

Protocol Status

Pre-arrival washout (under your prescribing physician)

Restart Delay

14 days

What "Major risk" Means

Serious clinical risk requiring physician-led tapering, washout, and monitoring. Treatment may proceed once the medication is appropriately cleared or transitioned.

Clinical Action

What our medical team does for patients on Mirtazapine.

Physician-supervised taper before treatment. Do not restart for 14 days post-treatment.

Where the Washout Happens

Pre-arrival washout (under your prescribing physician)

Discontinuation is completed before arrival, under the patient's own prescribing physician, with the medication-specific washout interval observed before the flood dose.

Pre-Treatment Washout Window

7 days minimum before treatment.

Post-Treatment Restart

Wait at least 14 days post-treatment before restarting.

The Pharmacology

How Mirtazapine interacts with ibogaine: serotonergic activity (serotonin syndrome).

Noribogaine is a potent serotonin reuptake inhibitor. Combining it with another drug that raises synaptic serotonin (SSRIs, SNRIs, MAOIs, triptans, tramadol, MDMA, St John's Wort) can trigger serotonin syndrome — autonomic instability, hyperthermia, neuromuscular hyperactivity, and altered mental state. This is a leading cause of preventable harm in psychedelic medicine and the reason serotonergic medications carry the longest washout windows.

Same Mechanism

Other medications that interact via serotonergic activity (serotonin syndrome).

Contraindicated

Fluoxetine

Prozac, Sarafem

Contraindicated

Sertraline

Zoloft

Contraindicated

Paroxetine

Paxil, Pexeva

Contraindicated

Fluvoxamine

Luvox

Contraindicated

Vortioxetine

Trintellix, Brintellix

Contraindicated

Vilazodone

Viibryd

Same Severity Tier

Other major risk medications (different mechanism).

Opioid receptor potentiation

Methadone

Methadose, Dolophine

Opioid receptor potentiation

Buprenorphine

Suboxone, Subutex

Opioid receptor potentiation

Fentanyl

Duragesic, Sublimaze

Opioid receptor potentiation

Oxycodone

Oxycontin, Percocet

Opioid receptor potentiation

Hydrocodone

Vicodin, Norco

Opioid receptor potentiation

Morphine

Ms Contin, Kadian

Common Questions

Mirtazapine and ibogaine treatment.

Can I take ibogaine if I am on Mirtazapine?

Major risk. Frequently prescribed in detox for sleep and appetite, so it is often not reported as an antidepressant. Noradrenergic and specific serotonergic action carries serotonin syndrome risk with noribogaine, plus reported QTc prolongation. Physician-supervised taper before treatment. Do not restart for 14 days post-treatment.

How long do I need to be off Mirtazapine before ibogaine treatment?

Pre-arrival washout (under your prescribing physician). Discontinuation is completed before arrival, under the patient's own prescribing physician, with the medication-specific washout interval observed before the flood dose. 7 days minimum before treatment. Wait at least 14 days post-treatment before restarting.

What is the mechanism of the interaction?

Serotonergic activity (serotonin syndrome). Noribogaine is a potent serotonin reuptake inhibitor. Combining it with another drug that raises synaptic serotonin (SSRIs, SNRIs, MAOIs, triptans, tramadol, MDMA, St John's Wort) can trigger serotonin syndrome — autonomic instability, hyperthermia, neuromuscular hyperactivity, and altered mental state. This is a leading cause of preventable harm in psychedelic medicine and the reason serotonergic medications carry the longest washout windows.

Can I switch to a different medication so I can have ibogaine treatment?

In many cases yes. Our medical team works with your prescribing physician to taper or substitute medications safely before treatment. The right substitution depends on the underlying condition you are treating with Mirtazapine — contact us for an individual review.

Checking more than one medication? Use the interactive Drug Interaction Checker to screen your full medication list at once.

Browse all 112 medications in the A–Z directory.

DA
Medically reviewed by Dr. Arellano, M.D.
Clinical Director, MindScape Retreat · Board-certified physician specializing in ibogaine-assisted detoxification with over 1,000 patients treated.
Last reviewed: May 2026 · See full medical team
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