Mountain Flax + Ospemifene
Ospemifene brand name: Osphena.
We found no known interaction between Mountain Flax and Ospemifene 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 label for Ospemifene states a food rule worth keeping to.
Mountain Flax and Ospemifene
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 Ospemifene 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 Ospemifene, 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
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.
Mountain Flax in Pregnancy & Breastfeeding
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
Some Ospemifene Products Have a Food Rule — Mountain Flax Should Not Break It
At least one FDA label for a product containing Ospemifene says to take it with food. If you take Mountain Flax on an empty stomach out of habit, keep them separate — and take Ospemifene with a meal where the label says to.
This may not be true of your version. Food instructions belong to the product, not the ingredient: two Ospemifene products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.
One tablet taken orally once daily with food.
From the Dosage and Administration section of the FDA label we read for Ospemifene — where that label names a specific product, the instruction is that product's. See the Ospemifene drug page ›
A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.
See Every Supplement That Interacts With Ospemifene
This page covers Mountain Flax only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ospemifene page lists 155 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), Tiratricol (major) and Acacia Rigidula (moderate).
By severity: 4 major · 112 moderate · 39 minor.
From our pharmacist’s overview on the Ospemifene page
“Women prescribed ospemifene (Osphena) for painful intercourse after menopause are often the same women reaching for St. John's wort for mood or grapefruit juice at breakfast, and both sit among the four major-rated interactions on this page, so the list deserves genuine care.”
Reviewed by 2 · Jul 18, 2026
Where Mountain Flax and Ospemifene 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.
#1,080 of 1,452 supplements looked up here in the last 7 days
#2,474 of 2,830 medications looked up here in the last 7 days
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 20, 2026. The Mountain Flax and Ospemifene 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.
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.
About Ospemifene
What Is Ospemifene Used For?
Brand name: Osphena
Osphena (ospemifene) is used to treat two specific symptoms of vulvar and vaginal atrophy — the thinning and drying of vaginal tissues that can happen after menopause. The first is moderate to severe dyspareunia (painful intercourse), and the second is moderate to severe vaginal dryness.
Both of these uses are for postmenopausal women only. Osphena is not used in children or in women who are pregnant or may become pregnant.
Most-Reported Side Effects for Ospemifene
From FAERS, the FDA’s public side-effect reporting system (2,601 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
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.
No drugs match “”.
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.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Abemaciclib ›
- Metoprolol ›
- Aspirin ›
- Acetaminophen ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Valacyclovir ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Lisinopril ›
- Amoxicillin ›
- Isotretinoin ›
- Methotrexate ›
- Amlodipine Besylate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Fluoxetine ›
- Doxycycline ›
- Acyclovir ›
- Azithromycin ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Quetiapine ›
- Clonazepam ›
- Levothyroxine, Liothyronine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Methylene Blue ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Mountain Flax list.
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.
- 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.
Taking Mountain Flax and Ospemifene Together: Common Questions
Is it safe to take Mountain Flax with Ospemifene?
Should I take Mountain Flax and Ospemifene at the same time of day?
Does Ospemifene interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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Still Have a Question About Ospemifene and Mountain Flax?
Our pharmacists answer your medication & supplement questions — free.
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.