Drug & supplement interaction

Kousso + Bevacizumab-Awwb

Bevacizumab-Awwb brand name: Mvasi.

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 Kousso and Bevacizumab-Awwb 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

Kousso and Bevacizumab-Awwb

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 Bevacizumab-Awwb and Kousso 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.

Kousso safety at a glance

Kousso overall Use caution Traditionally used as a worm treatment but can cause nausea, vomiting, and other side effects; modern safety data are limited.
Pregnancy Unsafe When used orally due to abortifacient activity. Read the full pregnancy detail
Breastfeeding Unsafe When used orally due to its potential for toxicity. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Bevacizumab-Awwb and Kousso? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Bevacizumab-Awwb

Interactions in our licensed database are recorded against drug classes, not just single drug names. Bevacizumab-Awwb is filed under a single classification — antineoplastics. Kousso has documented interactions with 1 drug class — the most serious being antidiabetes drugs (moderate) — and none of Bevacizumab-Awwb’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

Kousso Does Interact With Other Medications

Kousso has 86 moderate known drug interactions in our database — Bevacizumab-Awwb isn’t one of them. If you take anything else, check it against the full list below.

Moderate 86 No known interaction 2,744 (incl. Bevacizumab-Awwb)
Taking anything else?

Check Another of Your Medications Against Kousso

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

What to actually watch for

No Interaction Found — But Data Suggests Kousso and Bevacizumab-Awwb May Share Several of the Same Side Effects

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. One of them is worth acting on rather than waiting out — marked below.

  • Fainting Worth acting on Additional detail

    Kousso

    “Orally, kousso can cause gastrointestinal irritation, resulting in salivation, nausea, and diarrhea. It can also cause headache and general weakness (18). At high doses, vision disorders, spasms, and syncope can occur, progressing to acidosis, and shock (18).”

    Kousso · Natural Medicines adverse-effect record, reported in cluster headache.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    “Orally, kousso can cause syncope when used in high doses (18).”

    Kousso · Natural Medicines adverse-effect record, reported in syncope.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    Bevacizumab-Awwb

    Listed in the ADVERSE REACTIONS section of the FDA label for Bevacizumab-Awwb. Read the label on DailyMed ›

  • Diarrhea / Nausea Additional detail

    Kousso

    “Orally, kousso can cause gastrointestinal irritation, resulting in salivation, nausea, and diarrhea (18).”

    Kousso · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    Bevacizumab-Awwb

    Listed in the ADVERSE REACTIONS section of the FDA label for Bevacizumab-Awwb. Read the label on DailyMed ›

  • Headache Additional detail

    Kousso

    “Orally, kousso can cause headache and general weakness (18). At high doses, kousso can cause spasms (18).”

    Kousso · Natural Medicines adverse-effect record, reported in cluster headache.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    Bevacizumab-Awwb

    Listed in the ADVERSE REACTIONS section of the FDA label for Bevacizumab-Awwb. Read the label on DailyMed ›

Effects for Bevacizumab-Awwb come from the ADVERSE REACTIONS section of its FDA label; effects for Kousso come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Kousso in Pregnancy & Breastfeeding

Pregnancy Unsafe

When used orally due to abortifacient activity.

Lactation Unsafe

When used orally due to its potential for toxicity.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Everything else you take

See Every Supplement That Interacts With Bevacizumab-Awwb

This page covers Kousso only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Bevacizumab-Awwb page lists 1 supplement it has a documented interaction with, worst first, each one explained.

The most serious there right now: American Pawpaw (minor).

By severity: 1 minor.

From our pharmacist’s overview on the Bevacizumab-Awwb page

“Bevacizumab-awwb (Mvasi) is an IV cancer drug, a biosimilar of bevacizumab, used against colorectal, lung, and other tumors by cutting off the blood supply they need. Given how serious that treatment setting is, the supplement record here is strikingly short.”

Reviewed by 2 · Jul 18, 2026

Open the Bevacizumab-Awwb interaction page

How much people look this up

Where Kousso and Bevacizumab-Awwb 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 Kousso
Top half

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

29 days ago today
Medication Bevacizumab-Awwb
Top 25%

#688 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 Kousso reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Kousso and Bevacizumab-Awwb records this page draws on were last updated July 11, 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 Kousso

What is Kousso?

  • Tapeworm infection (traditional anthelmintic)
  • Other intestinal worms
  • Traditional digestive remedies

Kousso is the dried flower of the African tree Hagenia abyssinica, used traditionally—especially in Ethiopia—to expel tapeworms. It was once listed in older pharmacopeias as a worm treatment, but it has largely been replaced by safer, more reliable modern medicines and can cause significant side effects. There is no good modern evidence supporting its use, so talk to a pharmacist or doctor before considering it.

Hagenia abyssinica · Rosaceae · Dried female flowers · Dried flower powder, infusion (tea), and traditional liquid preparations

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

Kousso: dosing

There is no well-established, standardized modern dose for kousso. Traditional preparations varied widely and were not measured in the careful way modern medicines are.Because of the lack of standardization and the risk of side effects, we cannot recommend a specific amount.

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

Read the full Kousso monograph & all interactions
Medication

About Bevacizumab Injection

What Is Bevacizumab Injection Used For?

Brand name: Mvasi

Bevacizumab injection is used to treat multiple types of advanced or metastatic cancers, most often in combination with chemotherapy. Avastin is approved for metastatic colorectal cancer (when combined with specific fluorouracil-based chemotherapy regimens), non-squamous non-small cell lung cancer (first-line, with carboplatin and paclitaxel), recurrent glioblastoma in adults, metastatic renal cell carcinoma (with interferon alfa), persistent or metastatic cervical cancer, and hepatocellular carcinoma (liver cancer, in combination with atezolizumab for patients who have not yet received systemic therapy).

Avastin is also approved for epithelial ovarian, fallopian tube, or primary peritoneal cancer — including stage III/IV disease after surgery, platinum-resistant recurrent disease, and platinum-sensitive recurrent disease — each with specific chemotherapy partner regimens. Note that Avastin is not indicated for adjuvant (preventive post-surgery) treatment of colon cancer.

See full Bevacizumab Injection drug information
Keep checking

Other Drugs & Kousso

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

0Major
86Moderate
0Minor
2,743No known interaction
86 Moderate 2,743 No interaction
Moderate

86 interactions

Showing 60 of 86 moderate interactions — see all 86 on the Kousso page.

No interaction 2,743 drugs checked — show the list

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

Showing the 60 most looked-up of 2,743 medications checked with no known interaction — see the full Kousso list.

See the full Kousso interactions page
See every supplement checked against Bevacizumab-Awwb, ranked by severity
Evidence & sources

Kousso References

The 4 references that drive our Kousso 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. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Thomsen H, Reider K, Franke K, et al. Characterization of constituents and anthelmintic properties of Hagenia abyssinica. Sci Pharm 2012;80(2):433-46. PubMed
  4. Kifle ZD, Yesuf JS, Atnafie SA. Evaluation of in vitro and in vivo Anti-Diabetic, Anti-Hyperlipidemic and Anti-Oxidant Activity of Flower Crude Extract and Solvent Fractions of Hagenia Abyssinica (Rosaceae). J Exp Pharmacol. 2020 Jun 9;12:151-167.

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 Kousso and Bevacizumab-Awwb Together: Common Questions

Is it safe to take Kousso with Bevacizumab-Awwb?
We do not list a known interaction between Kousso and Bevacizumab-Awwb. 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 Kousso and Bevacizumab-Awwb have any of the same side effects?
Yes — our sources link each of them separately to 4 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 Kousso and Bevacizumab-Awwb combination checked?
Interactions in our licensed database are recorded against drug classes. Bevacizumab-Awwb is filed under 1 classification, and Kousso has documented interactions with 1 drug class — none of Bevacizumab-Awwb'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 Kousso interact with any other medications?
Yes. Kousso has 86 documented drug interactions in our database — Bevacizumab-Awwb 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 Bevacizumab-Awwb interact with any supplements?
Yes. Bevacizumab-Awwb has documented interactions with 1 supplement in our database — Kousso is not one of them. The Bevacizumab-Awwb 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

Kousso monograph Uses, safety profile, and every drug interaction in one place Bevacizumab Injection drug information The full plain-English guide to this medication Bevacizumab-Awwb supplement interactions Every supplement checked against Bevacizumab-Awwb, 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 Bevacizumab-Awwb and Kousso?

Our pharmacists answer your medication & supplement questions — free.

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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.