Drug & supplement interaction

Mountain Flax + Acetaminophen, Chlorpheniramine, Pseudoephedrine

Acetaminophen, Chlorpheniramine, Pseudoephedrine brand names: Extra Strength Tylenol Allergy Sinus, Alka-Seltzer PLUS Liquid Gels, Lorsin, Sinumed, Codimal, and others.

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 Mountain Flax and Acetaminophen, Chlorpheniramine, Pseudoephedrine 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.

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Interaction report

Mountain Flax and Acetaminophen, Chlorpheniramine, Pseudoephedrine

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 Acetaminophen, Chlorpheniramine, Pseudoephedrine 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine, 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine. 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine.

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

Everything else you take

See Every Supplement That Interacts With Acetaminophen, Chlorpheniramine, Pseudoephedrine

This page covers Mountain Flax only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Acetaminophen, Chlorpheniramine, Pseudoephedrine page lists 293 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Beer (major), Ephedra (major) and Grapefruit (major).

By severity: 14 major · 233 moderate · 46 minor.

Open the Acetaminophen, Chlorpheniramine, Pseudoephedrine interaction page

How much people look this up

Where Mountain Flax and Acetaminophen, Chlorpheniramine, Pseudoephedrine 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine
Top half

#786 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 Acetaminophen, Chlorpheniramine, Pseudoephedrine 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
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
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Mountain Flax list.

See the full Mountain Flax interactions page
See every supplement checked against Acetaminophen, Chlorpheniramine, Pseudoephedrine, ranked by severity
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 Acetaminophen, Chlorpheniramine, Pseudoephedrine Together: Common Questions

Is it safe to take Mountain Flax with Acetaminophen, Chlorpheniramine, Pseudoephedrine?
We do not list a known interaction between Mountain Flax and Acetaminophen, Chlorpheniramine, Pseudoephedrine. 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.
Does Acetaminophen, Chlorpheniramine, Pseudoephedrine interact with any supplements?
Yes. Acetaminophen, Chlorpheniramine, Pseudoephedrine has documented interactions with 293 supplements in our database — Mountain Flax is not one of them. The Acetaminophen, Chlorpheniramine, Pseudoephedrine 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

Mountain Flax monograph Uses, safety profile, and every drug interaction in one place Acetaminophen, Chlorpheniramine, Pseudoephedrine supplement interactions Every supplement checked against Acetaminophen, Chlorpheniramine, Pseudoephedrine, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Acetaminophen, Chlorpheniramine, Pseudoephedrine and Mountain Flax?

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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.