Drug & supplement interaction

Combretum Micranthum + Voxelotor

Voxelotor brand name: Oxbryta.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Combretum Micranthum and Voxelotor in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Combretum Micranthum and Voxelotor

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Voxelotor and Combretum Micranthum in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Combretum Micranthum safety at a glance

Combretum Micranth... overall Use caution Used widely as a traditional tea, but human safety data are very limited.
Pregnancy Avoid Not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid No reliable safety data while breastfeeding, so avoid use.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Voxelotor and Combretum Micranthum? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Voxelotor

Interactions in our licensed database are recorded against drug classes, not just single drug names. Voxelotor is filed under 3 classifications — cytochrome p450 3a4 (cyp3a4) inhibitors, cytochrome p450 3a4 (cyp3a4) substrates, oral drugs. Combretum Micranthum has documented interactions with 3 drug classes — the most serious being antidiabetes drugs (moderate), antihypertensive drugs (moderate) and diuretic drugs (moderate) — and none of Voxelotor’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Combretum Micranthum Does Interact With Other Medications

Combretum Micranthum has 265 moderate known drug interactions in our database — Voxelotor isn’t one of them. If you take anything else, check it against the full list below.

Moderate 265 No known interaction 2,565 (incl. Voxelotor)
Taking anything else?

Check Another of Your Medications Against Combretum Micranthum

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

What to actually watch for

No Interaction Found — But Data Suggests Combretum Micranthum and Voxelotor May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Stomach pain reported in 5.3% of FDA reports for Voxelotor Additional detail

    Combretum Micranthum

    “Orally, abdominal pain has been reported.”

    Combretum Micranthum · Natural Medicines adverse-effect record, reported in pain.

    2 sources cited
    1. 106180. Bourqui A, Niang EAB, Graz B, et al. Hypertension treatment with Combretum micranthum or Hibiscus sabdariffa, as decoction or tablet: a randomized clinical trial. J Hum Hypertens 2020. PubMed
    2. 106191. Seck SM, Doupa D, Dia DG, et al. Clinical efficacy of African traditional medicines in hypertension: A randomized controlled trial with Combretum micranthum and Hibiscus sabdariffa. J Hum Hypertens 2017;32(1):75-81. PubMed

    Voxelotor

    Listed in the ADVERSE REACTIONS section of the FDA label for Voxelotor, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Reported for Combretum Micranthum but not commonly for Voxelotor: trouble sleeping and passing urine more often.

Effects for Voxelotor come from the ADVERSE REACTIONS section of its FDA label; effects for Combretum Micranthum come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 22,291 voluntary FDA FAERS reports for Voxelotor that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Everything else you take

See Every Supplement That Interacts With Voxelotor

This page covers Combretum Micranthum only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Voxelotor page lists 143 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).

By severity: 3 major · 100 moderate · 40 minor.

From our pharmacist’s overview on the Voxelotor page

“Anyone taking voxelotor (Oxbryta) for sickle cell disease should treat this list with real care, because the pattern behind it is unusually consistent. Almost every entry works through CYP3A4, the same liver enzyme that clears voxelotor, so these ingredients can push the drug's blood level higher or pull it lower, either adding side ef…”

Reviewed by 2 · Jul 18, 2026

Open the Voxelotor interaction page

How much people look this up

Where Combretum Micranthum and Voxelotor 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 Combretum Micranthum
Steady interest

#1,010 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Voxelotor
Steady interest

#2,427 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.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Combretum Micranthum reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Combretum Micranthum and Voxelotor records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Combretum Micranthum

What is Combretum Micranthum?

Combretum Micranthum
  • Digestive upset
  • Liver and gallbladder support
  • Fever
  • Weight management
  • Mild urinary or fluid retention
  • Traditional opium withdrawal aid

Combretum micranthum (kinkeliba) is a West African shrub whose leaves are brewed into a traditional tea for digestion, liver complaints, and fever. Solid human studies are lacking, so its benefits remain unproven, and people who are pregnant, breastfeeding, or have liver or kidney problems should be cautious and talk to a healthcare professional first.

Combretum micranthum · Combretaceae · Leaves (mainly), and sometimes stems and roots · Tea (herbal infusion or decoction), dried leaf powder, capsules, liquid extracts

An interaction check asks whether these two react with each other — it does not ask whether Combretum Micranthum is a good idea for someone in your situation. Here is what our Combretum Micranthum record says about it on its own.

Combretum Micranthum: dosing

There is no established standardized dose for Combretum micranthum. Traditionally, a handful of dried leaves is steeped in hot water to make a tea, but the strength varies widely from one preparation to another.If you choose to use a commercial product, follow the directions on the label and do not exceed the recommended amount.

From our Combretum Micranthum monograph — the full record covers uses, side effects and every documented interaction.

Read the full Combretum Micranthum monograph & all interactions
Medication

About Voxelotor

What Is Voxelotor Used For?

Brand name: Oxbryta

Oxbryta (voxelotor) is approved to treat sickle cell disease (SCD) in adults and in children as young as 4 years old. It works by targeting the underlying problem in sickle cell disease — the abnormal hemoglobin that causes red blood cells to take on a rigid, sickle shape.

This approval was granted under the FDA's accelerated approval pathway, based on the drug's ability to raise hemoglobin levels. Continued approval may depend on results from confirmatory clinical trials showing broader clinical benefit.

Most-Reported Side Effects for Voxelotor

From FAERS, the FDA’s public side-effect reporting system (22,300 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Sickle cell anaemia with crisis 11,218 reports
Diarrhea 3,187 reports
Nausea 2,016 reports
Headache 1,691 reports
Abdominal pain upper 1,171 reports
See full Voxelotor drug information
Keep checking

Other Drugs & Combretum Micranthum

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

0Major
265Moderate
0Minor
2,564No known interaction
265 Moderate 2,564 No interaction
Moderate

265 interactions

Showing 60 of 265 moderate interactions — see all 265 on the Combretum Micranthum page.

No interaction 2,564 drugs checked — show the list

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

Showing the 60 most looked-up of 2,564 medications checked with no known interaction — see the full Combretum Micranthum list.

See the full Combretum Micranthum interactions page
See every supplement checked against Voxelotor, ranked by severity
Evidence & sources

Combretum Micranthum References

The 4 references that drive our Combretum Micranthum monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Bourqui A, Niang EAB, Graz B, et al. Hypertension treatment with Combretum micranthum or Hibiscus sabdariffa, as decoction or tablet: a randomized clinical trial. J Hum Hypertens 2020. PubMed
  2. Kpemissi M, Potârniche AV, Lawson-Evi P, et al. Nephroprotective effect of Combretum micranthum G. Don in nicotinamide-streptozotocin induced diabetic nephropathy in rats: In-vivo and in-silico experiments. J Ethnopharmacol 2020;261:113133. PubMed
  3. Chika A, Bello SO. Antihyperglycaemic activity of aqueous leaf extract of Combretum micranthum (Combretaceae) in normal and alloxan-induced diabetic rats. J Ethnopharmacol 2010;129(1):34-7. PubMed
  4. Seck SM, Doupa D, Dia DG, et al. Clinical efficacy of African traditional medicines in hypertension: A randomized controlled trial with Combretum micranthum and Hibiscus sabdariffa. J Hum Hypertens 2017;32(1):75-81. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Combretum Micranthum and Voxelotor Together: Common Questions

Is it safe to take Combretum Micranthum with Voxelotor?
We do not list a known interaction between Combretum Micranthum and Voxelotor. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Combretum Micranthum and Voxelotor have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Combretum Micranthum and Voxelotor combination checked?
Interactions in our licensed database are recorded against drug classes. Voxelotor is filed under 3 classifications, and Combretum Micranthum has documented interactions with 3 drug classes — none of Voxelotor's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Combretum Micranthum interact with any other medications?
Yes. Combretum Micranthum has 265 documented drug interactions in our database — Voxelotor is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Voxelotor interact with any supplements?
Yes. Voxelotor has documented interactions with 143 supplements in our database — Combretum Micranthum is not one of them. The Voxelotor interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Combretum Micranthum monograph Uses, safety profile, and every drug interaction in one place Voxelotor drug information The full plain-English guide to this medication Voxelotor supplement interactions Every supplement checked against Voxelotor, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 4 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Voxelotor and Combretum Micranthum?

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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.