Furosemide
Lasix, Frusemide
Ibogaine and Ethacrynic Acid
Also known as: Edecrin
Loop diuretic, typically reserved for sulfonamide allergy. Same potassium and magnesium wasting as the other loops.
Severity
Major risk
Mechanism
Electrolyte disturbance
Protocol Status
Continue as prescribed — cleared by a measured lab value, not a waiting period
Restart Delay
Physician discretion
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 Ethacrynic Acid.
Measure K+ and Mg2+ before dosing and correct both, magnesium first.
Where the Washout Happens
Continue as prescribed — cleared by a measured lab value, not a waiting period
This medication is not stopped for treatment, and should not be stopped on our initiative — the condition it treats usually outranks the interaction. What it changes is monitoring: serum potassium and magnesium are measured before the flood dose and corrected to target, and the dose is deferred until those numbers are right rather than until a number of days have passed. Any change to the prescription belongs to the prescribing physician.
Post-Treatment Restart
Restart at physician discretion once acute window closes.
The Pharmacology
How Ethacrynic Acid interacts with ibogaine: electrolyte disturbance.
QTc is exquisitely sensitive to potassium and magnesium. Diuretics, laxatives, and conditions that lower these electrolytes lengthen QT and add to ibogaine's hERG effect. Pre-treatment electrolyte panels and IV repletion are routine.
Same Mechanism
Other medications that interact via electrolyte disturbance.
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
Ethacrynic Acid and ibogaine treatment.
Can I take ibogaine if I am on Ethacrynic Acid?
Major risk. Loop diuretic, typically reserved for sulfonamide allergy. Same potassium and magnesium wasting as the other loops. Measure K+ and Mg2+ before dosing and correct both, magnesium first.
How long do I need to be off Ethacrynic Acid before ibogaine treatment?
Continue as prescribed — cleared by a measured lab value, not a waiting period. This medication is not stopped for treatment, and should not be stopped on our initiative — the condition it treats usually outranks the interaction. What it changes is monitoring: serum potassium and magnesium are measured before the flood dose and corrected to target, and the dose is deferred until those numbers are right rather than until a number of days have passed. Any change to the prescription belongs to the prescribing physician.
What is the mechanism of the interaction?
Electrolyte disturbance. QTc is exquisitely sensitive to potassium and magnesium. Diuretics, laxatives, and conditions that lower these electrolytes lengthen QT and add to ibogaine's hERG effect. Pre-treatment electrolyte panels and IV repletion are routine.
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 Ethacrynic Acid — contact us for an individual review.
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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