Drug & supplement interaction

Slippery Elm + Bevacizumab-Awwb

Bevacizumab-Awwb brand name: Mvasi.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Slippery Elm 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

Slippery Elm 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 Slippery Elm 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.

Slippery Elm safety at a glance

Slippery Elm overall Use caution Generally well tolerated for short-term use, but high-quality safety data are limited.
Pregnancy Use caution Not enough reliable safety data; some sources caution against using it during pregnancy.
Breastfeeding Use caution There is too little information on safety while breastfeeding, so caution is advised.

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

Still wondering about combining Bevacizumab-Awwb and Slippery Elm? 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. Slippery Elm has documented interactions with 1 drug class — the most serious being oral 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

Slippery Elm Does Interact With Other Medications

Slippery Elm has 2,022 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 2,022 No known interaction 808 (incl. Bevacizumab-Awwb)
Taking anything else?

Check Another of Your Medications Against Slippery Elm

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

What to actually watch for

No Interaction Found — But Data Suggests Slippery Elm and Bevacizumab-Awwb 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.

  • A skin rash Additional detail

    Slippery Elm

    “Topically, slippery elm extracts can cause contact dermatitis. The pollen is an allergen (6). Contact dermatitis and urticaria have been reported after exposure to slippery elm or an oleoresin contained in the slippery elm bark.”

    Slippery Elm · Natural Medicines adverse-effect record, reported in dermatitis.

    2 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 75131. Czarnecki D, Nixon R, Bekhor P, and et al. Delayed prolonged contact urticaria from the elm tree. Contact Dermatitis 1993;28:196-197. PubMed

    Bevacizumab-Awwb

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

Reported for Slippery Elm but not commonly for Bevacizumab-Awwb: hives.

Effects for Bevacizumab-Awwb come from the ADVERSE REACTIONS section of its FDA label; effects for Slippery Elm 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.

Overlapping uses

What Bevacizumab-Awwb Is Prescribed For, and What Slippery Elm Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Bevacizumab-Awwb is a prescription medicine with approved uses on its FDA label. Slippery Elm is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Bevacizumab-Awwb is prescribed for: Avastin, Avzivi, and JOBEVNE are brand names for bevacizumab injection, used to treat multiple types of cancer. Avastin is indicated for metastatic colorectal cancer, non-squamous non-small cell lung cancer, recurrent glioblastoma (a type of brain tumor) in adults, metastatic renal cell carcinoma (kidney cancer), persistent or metastatic cervical cancer, epithelial ovarian, fallopian tube, or primary peritoneal cancer, and unresectable or metastatic hepatocellular carcinoma (liver cancer). These treatments are typically used in combination with chemotherapy, though in some settings bevacizumab is given as a single agent. Avastin is not indicated for adjuvant (preventive post-surgery) treatment of colon cancer.

Slippery Elm has been studied for:

  • Cancer studied, not established Slippery Elm has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Slippery Elm for cancer

    Oral slippery elm has only been evaluated in combination with other ingredients; its effect when used alone is unclear.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Bevacizumab-Awwb on your own; if you are taking Slippery Elm for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Slippery Elm or Bevacizumab-Awwb

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Slippery Elm or Bevacizumab-Awwb, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Bevacizumab-Awwb

This page covers Slippery Elm 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

One more smart check

Taking Slippery Elm as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1,490 real supplement products containing Slippery Elm, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Slippery Elm. Even though Slippery Elm itself has no known interaction with Bevacizumab-Awwb, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Slippery Elm 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 Slippery Elm
Top 10%

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

29 days ago today
Medication Bevacizumab-Awwb
Steady interest

#2,366 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 Slippery Elm reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Slippery Elm 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 Slippery Elm

What is Slippery Elm?

Slippery Elm
  • Sore throat and cough
  • Heartburn and acid reflux
  • Digestive upset and IBS
  • Skin irritation (topical)
  • Constipation or diarrhea

Slippery elm is a traditional herbal remedy made from the inner bark of a North American elm tree, used mainly to soothe sore throats and irritated digestive tracts. Its mucilage can coat and calm mucous membranes, but solid human evidence for most uses is limited. It is generally considered low-risk for short-term use, but you should still check with your pharmacist or doctor first.

Ulmus rubra · Ulmaceae · Inner bark · Capsules, tablets, lozenges, powder, tea, throat lozenges, topical pastes

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

Slippery Elm: dosing

There is no official standardized dose for slippery elm. The right amount can vary depending on the form (lozenge, capsule, powder, or tea) and the product.The safest approach is to follow the directions on the product label. When using the powder or capsules, take them with a full glass of water.

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

Read the full Slippery Elm monograph & all interactions
Medication

About Bevacizumab Injection

What Is Bevacizumab Injection Used For?

Brand name: Mvasi

Avastin, Avzivi, and JOBEVNE are brand names for bevacizumab injection, used to treat multiple types of cancer. Avastin is indicated for metastatic colorectal cancer, non-squamous non-small cell lung cancer, recurrent glioblastoma (a type of brain tumor) in adults, metastatic renal cell carcinoma (kidney cancer), persistent or metastatic cervical cancer, epithelial ovarian, fallopian tube, or primary peritoneal cancer, and unresectable or metastatic hepatocellular carcinoma (liver cancer).

These treatments are typically used in combination with chemotherapy, though in some settings bevacizumab is given as a single agent. Avastin is not indicated for adjuvant (preventive post-surgery) treatment of colon cancer.

See full Bevacizumab Injection drug information
Keep checking

Other Drugs & Slippery Elm

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

0Major
2,022Moderate
0Minor
807No known interaction
2,022 Moderate 807 No interaction
Moderate

2,022 interactions

Showing 60 of 2,022 moderate interactions — see all 2,022 on the Slippery Elm page.

No interaction 807 drugs checked — show the list

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

Showing the 60 most looked-up of 807 medications checked with no known interaction — see the full Slippery Elm list.

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

Slippery Elm References

The 3 references that drive our Slippery Elm 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. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Czarnecki D, Nixon R, Bekhor P, and et al. Delayed prolonged contact urticaria from the elm tree. Contact Dermatitis 1993;28:196-197. 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 Slippery Elm and Bevacizumab-Awwb Together: Common Questions

Is it safe to take Slippery Elm with Bevacizumab-Awwb?
We do not list a known interaction between Slippery Elm 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 Slippery Elm and Bevacizumab-Awwb 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.
Are Slippery Elm and Bevacizumab-Awwb used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Slippery Elm in each. That is a conversation for your prescriber, especially if Bevacizumab-Awwb is being adjusted to a target.
How was the Slippery Elm and Bevacizumab-Awwb combination checked?
Interactions in our licensed database are recorded against drug classes. Bevacizumab-Awwb is filed under 1 classification, and Slippery Elm 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 Slippery Elm interact with any other medications?
Yes. Slippery Elm has 2,022 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 — Slippery Elm 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

Slippery Elm 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Bevacizumab-Awwb and Slippery Elm?

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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.