Medication interaction hub

What Supplements Interact with Halofantrine?

Halofantrine brand name: Halfan. Every interaction below applies to the brands too.

38 Interactions 7 Major 22 Moderate 9 Minor
Curated & coded by · Clinical Pharmacist · Updated September 22, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Halofantrine? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Halofantrine against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Halofantrine, an antimalarial, carries a cardiac risk of its own: it can stretch the QT interval, the pause between heartbeats that, if it grows too long, can trigger a dangerous rhythm. Combining it casually with supplements is a bad idea. Of the 38 ingredients on file, 7 are rated major, and 13 pile onto that same QT effect, grapefruit among them; even juice, in large amounts, can prolong the interval by itself.

Another 17 ingredients, activated charcoal among them, can change how much of an oral dose gets absorbed, no small thing when the drug is treating malaria. Six more may lower the seizure threshold, and three interact through a liver enzyme, CYP2D6. Nine of the 38 are only minor. Learn the seven majors first. Six add to the heart rhythm danger, and the seventh, charcoal, can pull the drug out of the body before it does its job.

— , Clinical Pharmacist · July 18, 2026

Major 7 Moderate 22 Minor 9 No known interaction 1,414

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Top Ingredient Interactions

Halofantrine: Top Interactions at a Glance

The most significant Halofantrine supplement & herbal interactions, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 38 interacting ingredients — plus 1,414 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

The most clinically significant Halofantrine + supplement combinations in our database, best-documented first. Open any card for the full report.

Major Likelihood Probable Activated Charcoal + Halofantrinei

Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the route of administration.

Read the full interaction Major Likelihood Probable Arsenic + Halofantrinei

Arsenic trioxide can prolong the QT interval.

Read the full interaction Major Likelihood Probable Cesium + Halofantrinei

Theoretically, taking cesium concomitantly with other drugs that prolong the QT interval may increase the risk of ventricular arrhythmias and death.

Read the full interaction Major Likelihood Probable Ephedra + Halofantrinei

Theoretically, ephedra might have an additive effect with drugs that prolong the QT interval.

Read the full interaction Major Likelihood Probable Grapefruit + Halofantrinei

Grapefruit or grapefruit juice, especially if consumed in large amounts, can cause additive QT interval prolongation when taken with QT interval-prolonging drug...

Read the full interaction Major Likelihood Probable Sida Cordifolia + Halofantrinei

Theoretically, Sida cordifolia might increase the risk of additive QT interval prolongation when taken with QT interval-prolonging drugs.

Read the full interaction
The complete list

Every Supplement Checked Against Halofantrine

All 1,452 ingredients in our database, ranked by severity — 38 with a Halofantrine interaction on file and 1,414 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Halofantrine?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Marshmallow with Halofantrine?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, mucilage in marshmallow might impair absorption of oral drugs.

Full Marshmallow + Halofantrine answer

Can you take Xanthan Gum with Halofantrine?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, xanthan gum can alter the absorption of oral drugs due to its fiber qualities.

Full Xanthan Gum + Halofantrine answer

Can you take Activated Charcoal with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the rout...

Full Activated Charcoal + Halofantrine answer

Can you take Arsenic with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Arsenic trioxide can prolong the QT interval.

Full Arsenic + Halofantrine answer

Can you take Cesium with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, taking cesium concomitantly with other drugs that prolong the QT interval may increase the risk of ventricular arrhythmias an...

Full Cesium + Halofantrine answer

Can you take Ephedra with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, ephedra might have an additive effect with drugs that prolong the QT interval.

Full Ephedra + Halofantrine answer

Can you take Grapefruit with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Grapefruit or grapefruit juice, especially if consumed in large amounts, can cause additive QT interval prolongation when taken with QT inte...

Full Grapefruit + Halofantrine answer

Can you take Sida Cordifolia with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, Sida cordifolia might increase the risk of additive QT interval prolongation when taken with QT interval-prolonging drugs.

Full Sida Cordifolia + Halofantrine answer

Can you take American Hellebore with Halofantrine?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. American hellebore, also known as Veratrum viride, contains alkaloids that can potentially prolong the QT interval on an electrocardiogram (...

Full American Hellebore + Halofantrine answer

Can you take Coffee Charcoal with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Coffee charcoal can reduce the absorption of orally administered drugs and should be separated from oral drug administration by at least two...

Full Coffee Charcoal + Halofantrine answer

Can you take European Mandrake with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concurrent use might increase absorption of some drugs because of inhibited gastrointestinal (GI) motility caused by European...

Full European Mandrake + Halofantrine answer

Can you take Glucomannan with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, glucomannan may decrease absorption of drugs taken orally.

Full Glucomannan + Halofantrine answer

Can you take Yohimbe with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. CYP2D6 inhibitors may increase the levels and adverse effects of yohimbine, a constituent of yohimbe.

Full Yohimbe + Halofantrine answer

Can you take Biofeedback with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. There is some concern that electroencephalogram (EEG) biofeedback might lower the seizure threshold in some patients.

Full Biofeedback + Halofantrine answer

Can you take Bitter Orange with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, bitter orange might have an additive effect when combined with drugs that prolong the QT interval, potentially increasing the...

Full Bitter Orange + Halofantrine answer

Can you take Cinchona with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking cinchona with other QT interval-prolonging drugs might cause an additive effect and increase the risk of ventricular a...

Full Cinchona + Halofantrine answer

Can you take Dendrobium with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. The dendrobium constituent dendrobine is reported to have convulsant effects.

Full Dendrobium + Halofantrine answer

Can you take Evodia with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, evodia might have an additive effect with drugs that prolong the QT interval, potentially increasing the risk of ventricular...

Full Evodia + Halofantrine answer

Can you take Fever Bark with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, CYP2D6 inhibitors might increase the levels and clinical effects of yohimbine, a constituent of fever bark.

Full Fever Bark + Halofantrine answer

Can you take Ginkgo with Halofantrine?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.

Full Ginkgo + Halofantrine answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction 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.
  • Possible. 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
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Halofantrine is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Halofantrine, and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Halofantrine sits in 5 interaction categories. Open any one to see what the group means:

Oral Drugs 17 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

17 of the supplement ingredients on this page reach Halofantrine through this category.

Qt Interval-Prolonging Drugs 13 ingredients

Medications that can affect the heart's electrical rhythm (the QT interval). Supplements with similar effects can add to that risk.

13 of the supplement ingredients on this page reach Halofantrine through this category.

Seizure Threshold Lowering Drugs 6 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

6 of the supplement ingredients on this page reach Halofantrine through this category.

Cytochrome P450 2D6 (Cyp2D6) Inhibitors 3 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

3 of the supplement ingredients on this page reach Halofantrine through this category.

Halofantrine 1 ingredient

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

1 of the supplement ingredient on this page reaches Halofantrine through this category.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Halofantrine

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Halofantrine.

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Pharmacist Counseling Corner

Halofantrine & Supplements: Common Questions

What supplements interact with Halofantrine?
Our database currently documents 38 ingredients with a known Halofantrine interaction (7 major, 22 moderate, 9 minor). The practical move: scan the major group first, then look up the exact supplements you take rather than reading all 38. The highest-ranked right now: Activated Charcoal, Arsenic, Cesium.
Which Halofantrine supplement interactions are the most serious?
Focus on the major group: Activated Charcoal, Arsenic, Cesium, Ephedra and Grapefruit, among others. A major rating means the combination can be clinically significant, not that harm is guaranteed — but it's exactly the kind of thing to run past your pharmacist before your next dose, not after. Jump to the ranked list.
Can I take vitamins or supplements while on Halofantrine?
Plenty of supplements coexist fine with Halofantrine; a shorter list does not. Rather than memorizing it, check the specific ingredients on your labels — the ranked list above covers every one we've checked, and multi-ingredient products can be checked label-by-label with our scanner. Try the label scanner or the interaction checker.
Do brands like Halfan have the same supplement interactions as Halofantrine?
Yes — Halfan all contain Halofantrine, so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
What about Halofantrine and my other medications?
This page covers Halofantrine against supplements and herbal ingredients. Checking Halofantrine against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker.

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

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Sourcing

Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of September 22, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.