Furosemide
Lasix, Frusemide
Ibogaine and Spironolactone
Also known as: Aldactone, Carospir
Potassium-SPARING. Raises serum potassium rather than lowering it, so the risk here is HYPERkalaemia, not hypokalaemia — and hyperkalaemia has its own conduction consequences. Frequently prescribed at dermatology doses for acne in young women, where neither patient nor clinician thinks of it as a cardiac drug.
Severity
Moderate caution
Mechanism
Electrolyte disturbance
Protocol Status
Continue as prescribed — cleared by a measured lab value, not a waiting period
Restart Delay
Physician discretion
What "Moderate caution" Means
Use with caution. Often requires a brief hold, dose reduction, or enhanced monitoring rather than full discontinuation.
Clinical Action
What our medical team does for patients on Spironolactone.
Measure K+ before dosing and read it for a HIGH value as well as a low one. Do NOT give empiric potassium to a patient on spironolactone. Magnesium should still be measured and corrected.
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 Spironolactone 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 moderate caution medications (different mechanism).
QT-interval prolongation
Ondansetron
Zofran
QT-interval prolongation
Azithromycin
Zithromax, Z-Pack
Cardiac conduction (bradycardia / AV node)
Metoprolol
Lopressor, Toprol
Cardiac conduction (bradycardia / AV node)
Atenolol
Tenormin
Cardiac conduction (bradycardia / AV node)
Propranolol
Inderal
Cardiac conduction (bradycardia / AV node)
Carvedilol
Coreg
Common Questions
Spironolactone and ibogaine treatment.
Can I take ibogaine if I am on Spironolactone?
Moderate caution. Potassium-SPARING. Raises serum potassium rather than lowering it, so the risk here is HYPERkalaemia, not hypokalaemia — and hyperkalaemia has its own conduction consequences. Frequently prescribed at dermatology doses for acne in young women, where neither patient nor clinician thinks of it as a cardiac drug. Measure K+ before dosing and read it for a HIGH value as well as a low one. Do NOT give empiric potassium to a patient on spironolactone. Magnesium should still be measured and corrected.
How long do I need to be off Spironolactone 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 Spironolactone — 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