Drug & supplement interaction

Mountain Flax + Ravulizumab-Cwvz

Ravulizumab-Cwvz brand name: Ultomiris.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Mountain Flax and Ravulizumab-Cwvz 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.

Know someone taking this? Share
Interaction report

Mountain Flax and Ravulizumab-Cwvz

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 Ravulizumab-Cwvz and Mountain Flax 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.

Worth understanding: our licensed dataset holds no drug-interaction record for Mountain Flax at all — not against Ravulizumab-Cwvz, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

Mountain Flax safety at a glance

Mountain Flax overall Use caution It is a strong traditional purgative with little safety data, and overuse can cause harsh gut effects.
Pregnancy Unsafe When used orally due to possible emetic effects. Read the full pregnancy detail
Breastfeeding Unsafe When used orally due to possible emetic effects. 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 Ravulizumab-Cwvz and Mountain Flax? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Mountain Flax Itself Has Been Linked To

This is not an interaction — nothing below involves Ravulizumab-Cwvz. It is the side-effect record for Mountain Flax on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Mountain Flax, this list is the first place to look.

  • Diarrhea / Vomiting Additional detail

    “Orally, mountain flax can cause vomiting, gastrointestinal tract inflammation, and diarrhea (18).”

    Mountain Flax · 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.

Everything above comes from the Natural Medicines adverse-effect record for Mountain Flax — expand a row for the licensed statement it rests on. We haven’t matched Ravulizumab-Cwvz to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Ravulizumab-Cwvz.

Special populations

Mountain Flax in Pregnancy & Breastfeeding

Pregnancy And Lactation Unsafe

When used orally due to possible emetic effects.

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

How much people look this up

Where Mountain Flax and Ravulizumab-Cwvz 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 Mountain Flax
Steady interest

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

29 days ago today
Medication Ravulizumab-Cwvz
Top 25%

#329 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 Mountain Flax reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Mountain Flax and Ravulizumab-Cwvz 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 Mountain Flax

What is Mountain Flax?

  • Constipation
  • Laxative/purgative
  • Liver and digestive complaints
  • Joint and rheumatic discomfort
  • Traditional 'cleansing' remedies

Mountain Flax (Linum catharticum) is a small wild flax once used in traditional European herbalism mainly as a strong laxative or purgative. There is very little modern scientific evidence to support its use, and it can be harsh on the gut, so it is rarely recommended today. If you are considering any herbal laxative, talk to your pharmacist or doctor first.

Linum catharticum · Linaceae · Whole flowering plant (dried aerial parts) · Dried herb, tea/infusion, tincture (rare today)

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

Mountain Flax: dosing

There is no established or standardized dose for Mountain Flax, and it is not a common modern product. Older herbal traditions used small amounts of the dried plant as a tea, but exact safe amounts have not been studied.Because of this uncertainty and its strong purgative effect, we cannot recommend a specific dose.

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

Read the full Mountain Flax monograph & all interactions
Medication

About Ravulizumab-cwvz Injection

What Is Ravulizumab-cwvz Injection Used For?

Brand name: Ultomiris

  • Ravulizumab-cwvz injection is used in adults and children 1 month of age and older to treat paroxysmal nocturnal hemoglobinuria (PNH: a type of anemia in which too many red blood cells are broken down in the body, so there are not enough healthy cells to bring oxygen to all parts of the body). Ravulizumab-cwvz injection is also used in adults and children 1 month of age and older to treat atypical hemolytic uremic syndrome (aHUS; an inherited condition in which small blood clots form in the body and may cause damage to the blood vessels, blood cells, kidneys, and other parts of the body). Ravulizumab-cwvz injection is also used in adults to treat a certain form of myasthenia gravis (MG; a disorder of the nervous system that causes muscle weakness). Ravulizumab-cwvz is in a class of medications called monoclonal antibodies. It works by blocking the activity of the part of the immune system that may damage blood cells in people with PNH and that causes clots to form in people with aHUS. It works by disrupting communication between nerves and muscles in people with MG.

See full Ravulizumab-cwvz Injection drug information
Keep checking

Other Drugs & Mountain Flax

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

0Major
0Moderate
0Minor
2,829No known interaction
No interaction 2,829 drugs checked — show the list
Evidence & sources

Mountain Flax References

The 1 references that drive our Mountain Flax 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.

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 Mountain Flax and Ravulizumab-Cwvz Together: Common Questions

Is it safe to take Mountain Flax with Ravulizumab-Cwvz?
We do not list a known interaction between Mountain Flax and Ravulizumab-Cwvz. 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.

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

Still Have a Question About Ravulizumab-Cwvz and Mountain Flax?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.