Drug & supplement interaction

Iboga + Eliglustat

Eliglustat brand name: Cerdelga.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Iboga has a moderate interaction with Eliglustat. Theoretically, iboga may have an additive effect with drugs that prolong the QT interval.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Iboga and Eliglustat

Here is the interaction we found between these two, with the evidence behind it.

Moderate

QT INTERVAL-PROLONGING DRUGS

Why this applies to Eliglustat

Eliglustat falls under QT INTERVAL-PROLONGING DRUGS — the group Iboga interacts with.

Theoretically, iboga may have an additive effect with drugs that prolong the QT interval.
Numerous case reports suggest that ibogaine, a constituent in iboga, can cause QT interval prolongation.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the concern with pairing Iboga and Cerdelga (eliglustat). Both can stretch out something called the QT interval, which is a measure of your heart's electrical timing. Eliglustat already carries a known risk of nudging that timing in some people, and ibogaine (the active compound in Iboga) has been tied to QT prolongation in a number of case reports. Stacking the two could add up and, in a worst-case scenario, trigger a dangerous irregular heartbeat.

This isn't a metabolism issue where one speeds up or slows down the other, it's a direct overlap of effects on the heart. The evidence here is mostly anecdotal, but given that Iboga carries serious heart and safety risks on its own (and is illegal in the U.S.), I'd steer clear and talk with your doctor or pharmacist first.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. O'Connell CW, Gerona RR, Friesen MW, Ly BT. Internet-purchased ibogaine toxicity confirmed with serum, urine, and product content levels. Am J Emerg Med. 2015; 33(7):985.e5-6. PubMed
  2. Vlaanderen L, Martial LC, Franssen EJ, van der Voort PH, Oosterwerff E, Somsen GA. Cardiac arrest after ibogaine ingestion. Clin Toxicol (Phila). 2014;52(6):642-3. PubMed
  3. Asua. Growing menace of ibogaine toxicity. Br J Anaesth. 2013;111(6):1029-30. PubMed
  4. Hoelen DW, Spiering W, Valk GD. Long-QT syndrome induced by the antiaddiction drug ibogaine. N Engl J Med. 2009;360(3):308-9. PubMed
  5. Paling FP, Andrews LM, Valk GD, Blom HJ. Life-threatening complications of ibogaine: three case reports. Neth J Med. 2012;70(9):422-4.
  6. Pleskovic A, Gorjup V, Brvar M, Kozelj G. Ibogaine-associated ventricular tachyarrhythmias. Clin Toxicol (Phila). 2012;50(2):157. PubMed
  7. Litjens RP, Brunt TM. How toxic is ibogaine? Clin Toxicol (Phila). 2016;54(4):297-302. PubMed
  8. Grogan J, Gerona R, Snow JW, Kao L. Ibogaine consumption with seizure-like episodes, QTc-prolongation, and captured cardiac dysrhythmias. J Emerg Med 2019;57(4):e99-e104. PubMed
  9. 105383 Knuijver T, Schellekens A, Belgers M, et al. Safety of ibogaine administration in detoxification of opioid dependent individuals: a descriptive open-label observational study. Addiction 2021. PubMed
  10. Steinberg C, Deyell MW. Cardiac arrest after ibogaine intoxication. J Arrhythm 2018;34(4):455-457. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Iboga Also Interacts With Other Medications

Iboga has 1 major, 500 moderate known drug interactions in our database — the Eliglustat one above is one of them. If you take anything else, check it against the full list below.

Major 1 Moderate 500 No known interaction 2,329 (incl. Eliglustat)
Taking anything else?

Check Another of Your Medications Against Iboga

Covers the 2,830 medications we’ve checked against Iboga. Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Eliglustat

This page covers Iboga only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Eliglustat page lists 146 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 8 major · 98 moderate · 40 minor.

From our pharmacist’s overview on the Eliglustat page

“Grapefruit is the single riskiest everyday item for anyone taking eliglustat (Cerdelga) for Gaucher disease, and this list as a whole warrants genuine care. Eliglustat is cleared by the CYP3A4 enzyme, and 121 of the 146 ingredients here work through that pathway, either raising the drug's level, which can stress the heart's rhythm, or…”

Reviewed by 2 · Jul 18, 2026

Open the Eliglustat interaction page

How much people look this up

Where Iboga and Eliglustat Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Iboga
Top half

#608 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Eliglustat
Top half

#914 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Supplement

About Iboga

What is Iboga?

Iboga
  • Drug and alcohol addiction
  • Opioid withdrawal
  • Spiritual and ceremonial rituals
  • Fatigue and stimulant effects
  • Mood and emotional issues

Iboga is a Central African shrub whose root bark contains ibogaine, a powerful hallucinogenic compound studied mainly for addiction. It carries serious safety risks, including dangerous heart rhythm changes and deaths, and ibogaine is illegal in the United States and many other countries. We do not recommend its use outside of tightly controlled research settings.

Read the full Iboga monograph & all interactions
Medication

About Eliglustat

What Is Eliglustat Used For?

Brand name: Cerdelga

Cerdelga (eliglustat) is used for the long-term treatment of Gaucher disease type 1 in adults. Gaucher disease type 1 is a genetic condition in which a fatty substance called glucosylceramide builds up in organs like the liver, spleen, and bone marrow, causing them to enlarge and leading to problems like anemia and low platelet counts.

Cerdelga is only appropriate for adults whose bodies process the drug in a predictable way — specifically those identified as CYP2D6 extensive metabolizers (EMs), intermediate metabolizers (IMs), or poor metabolizers (PMs) by an FDA-cleared genetic test. People who are CYP2D6 ultra-rapid metabolizers may not reach drug levels high enough to benefit, and Cerdelga is not recommended for them.

See full Eliglustat drug information
Keep checking

Other Drugs & Iboga

Browse every other medication we’ve checked against Iboga — both the ones with a known interaction and the ones without. Select any drug for the full detail.

1Major
500Moderate
0Minor
2,328No known interaction
1 Major 500 Moderate 2,328 No interaction
Major

1 interaction

Moderate

500 interactions

Showing 60 of 500 moderate interactions — see all 500 on the Iboga page.

No interaction 2,328 drugs checked — show the list

We also checked Iboga against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,328 medications checked with no known interaction — see the full Iboga list.

See the full Iboga interactions page
See every supplement checked against Eliglustat, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Iboga monograph › Uses, safety, and every drug interaction in one place Eliglustat supplement interactions › Every supplement checked against Eliglustat, ranked by severity Eliglustat drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Iboga and Eliglustat Together: Common Questions

Can you take Iboga with Eliglustat?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Iboga and Eliglustat interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Eliglustat and Iboga?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.