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Dietary supplement

Organic Flaxseed Oil Ingredients & Drug Interactions

by Swanson

Organic Flaxseed Oil label
See full label image
Powder Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Organic Flaxseed Oil against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Organic Flaxseed Oil is a dietary supplement by Swanson with 1 active ingredient. Its ingredients are commonly taken for source of omega-3 (ala) fatty acids, heart and cholesterol health, dry skin and inflammation.Based on those ingredients, 379 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are OmegaTru organic Flaxseed Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Organic Flaxseed Oil by Swanson

Ask about any prescription or over-the-counter medication and we check it for interactions with Organic Flaxseed Oil by Swanson — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Organic Flaxseed Oil by Swanson

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 2 of its 5 active ingredients.
  • “OmegaTru organic Flaxseed Oil” is listed as a grouped ingredient — the label gives one combined amount (14 Gram(s)) without saying how much of each component you get.

This powder contains 5 active ingredients, centered on oleic acid and the essential fats found in flaxseed. Oleic acid is a type of monounsaturated fat that may help support cholesterol and heart health.

The flaxseed components — alpha-linolenic acid, linolenic acid, and polyunsaturated fat — are the primary omega fatty acids the product delivers. The formula also contains several inactive ingredients for stability and preservation: sunflower oil, rosemary extract, ascorbic acid, mixed tocopherols, and citric acid.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: cardiovascular health and healthy skin support.
  • We looked for evidence on: Atherosclerosis, Cardiovascular disease (CVD), Coronary heart disease (CHD), Dry skin, Hypercholesterolemia, Hyperlipidemia — and 3 related terms.
  • The strongest evidence on file: Oleic Acid is rated "Possibly Effective" for Coronary heart disease (CHD) (Natural Medicines).
  • Also on file: Oleic Acid is rated "Possibly Effective" for Hypercholesterolemia.
  • Also on file: Oleic Acid is rated "Insufficient Reliable Evidence To Rate" for Hypertension, Stroke.

Oleic acid has been rated possibly effective for lowering high cholesterol and supporting coronary heart health based on available evidence. The data we hold shows a limited strength of evidence, not a proven effect — so results aren't guaranteed, and more research may change how we understand its real-world benefit.

The evidence, ingredient by ingredient Flaxseed Oil Oleic Acid

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oleic acid from food sources like olive oil is generally recognized as safe at normal dietary amounts. However, the safety data for concentrated supplement doses in pregnancy and while breastfeeding is limited.

If you're pregnant or nursing, talk with your doctor or pharmacist about whether this product is right for you. No adverse effects are documented in our data for the ingredients we could check.

Side effects, ingredient by ingredient Flaxseed Oil Oleic Acid

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Oleic Acid.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take antidiabetes drugs, this product may increase their effect and lower your blood sugar more than intended — so you'll want to flag it with your pharmacist. We could not check the interaction data for several of the active ingredients, so mention all your medications when you do.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.

This product may be worth considering if you're looking to add omega fatty acids and support cholesterol or heart health — but it's not a treatment. If you take any diabetes medications or other prescriptions, check your specific drugs before you start.

Pregnant or nursing? Get personalized advice from your pharmacist or doctor first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Organic Flaxseed Oil, straight from the product label.

Brand Swanson
Barcode (UPC) 087614170039
Net contents 16 Fluid Ounce(s); 1 Pint(s); 473 Milliliter(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 322726
Product type Fat/fatty Acid
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Organic
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Organic Flaxseed Oil by Swanson, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.5 Ounce(s)
Maximum serving Sizes:
1 Ounce(s)
Servings per container
32
UPC/BARCODE
087614170039
IngredientAmount% DV
Calories130 Calorie(s)--
Total Fat14 Gram(s)18%
Saturated Fat1.5 Gram(s)8%
Alpha-Linolenic Acid0 NP--
Monounsaturated Fat3 Gram(s)--
Oleic Acid0 NP--
Trans Fat0 Gram(s)--
OmegaTru organic Flaxseed Oil14 Gram(s)--
Linolenic Acid0 NP--
Polyunsaturated Fat10 Gram(s)--

Other ingredients: Sunflower Oil, Rosemary Extract, Ascorbic Acid, Mixed Tocopherols, Citric Acid

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Swanson.com or call 1-800-437-4148

Formula

Provides high-concentration of the omega-3 alpha-linolenic acid

1 tablespoon (1/2 oz) provides approximately: Polyunsaturated fat (essential fatty acids) Omega-3 Fatty Acids (alpha-linolenic acid) 7 g Omega-6 Fatty Acids (linolenic acid) 2 g Monounsaturated fat Omega-9 Fatty Acids (oleic acid) 2.8 g

Formulation

May support cardiovascular health Promotes healthy skin Science-backed quality since 1969

Cardiovascular Health Cold Pressed

USDA Organic

Product of Canada

Certified Organic by Quality Assurance International (QAI) San Diego, CA 92122.

Free of trans fatty acids

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take 1-2 tablespoons daily with food.

Brand IP Statement(s)

OmegaTru is a registered trademark of Swanson Health Products.

Precautions

Warning: For adults only.

Consult your healthcare provider before using this product or any product if you are pregnant or nursing, taking medication or have a medical condition.

Keep out of reach of children.

Do not use if seal is broken.

Storage

Store in a cool, dry place. Refrigerate after opening.

FDA Disclaimer Statement

These statements have not been evaluated by a Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Seals/Symbols

USDA Organic

Quality Assurance International Certified Organic

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Organic Flaxseed Oil by Swanson label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Organic Flaxseed Oil label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Organic Flaxseed Oil by Swanson

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.5 Ounce(s) Dosage formPowder Servings per container32 Amounts shown are per serving.

OmegaTru organic Flaxseed Oil

Interacts with
293 drugs
14 Gram(s) per serving

Flaxseed oil is a plant-based source of the omega-3 fatty acid ALA, which the body can partly convert to the omega-3s found in fish oil. It may help s...

OmegaTru organic Flaxseed Oil monograph & interactions
  • › Alpha-Linolenic Acid
  • › Oleic Acid
  • › Linolenic Acid

Other (inactive) ingredients: Sunflower Oil, Rosemary Extract, Ascorbic Acid, Mixed Tocopherols, Citric Acid. These complete the product’s ingredient list but are not active constituents.

Interaction report

Organic Flaxseed Oil by Swanson Drug Interactions

Want to check YOUR meds against Organic Flaxseed Oil?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
379Drugs
379 Moderate

Ingredients driving the most interactions

OmegaTru organic Flaxseed Oil 293

Individual Drug Interactions

The ingredients in Organic Flaxseed Oil interact with 379 drugs. Click any drug to see the details.

1 of the 1 ingredient in Organic Flaxseed Oil interact with drugs. Each result below shows which ingredient is responsible. OmegaTru organic Flaxseed Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Organic Flaxseed Oil with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

OmegaTru organic Flaxseed Oil3 drug types · 293 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, using flaxseed oil in combination with anticoagulant or antiplatelet drugs might have additive effects and increase the risk of bleeding.
Small clinical studies show that consuming flaxseed oil might decrease platelet aggregation and increase bleeding time.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, combining flaxseed oil with other antihypertensive drugs might have additive effects and increase the risk of hypotension.
Some clinical evidence suggests that long-term consumption of flaxseed oil can modestly lower systolic and diastolic blood pressure, while other clinical research shows no effect.

Likelihood Possible Evidence D
Ezetimibe (Zetia)

Concomitant use of flaxseed oil and ezetimibe reduces the absorption of alpha-linolenic acid from flaxseed oil.
In one clinical study, concomitant consumption of ezetimibe 10 mg daily with flaxseed oil 2 grams providing 1 gram of alpha-linolenic acid daily blocked the absorption of alpha-linolenic acid, resulting in an overall reduction in alpha-linolenic plasma levels from baseline.

Likelihood Probable Evidence B
OmegaTru organic Flaxseed Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Organic Flaxseed Oil, from the product label.

Swanson

See all Swanson products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
swanson.com
Pharmacist Counseling Corner

Organic Flaxseed Oil by Swanson: Common Questions

Does Organic Flaxseed Oil by Swanson interact with any medications?
Yes. Based on its ingredients, Organic Flaxseed Oil has a known interaction with 379 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Organic Flaxseed Oil contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will this help my cholesterol or heart health?
The oleic acid in this product is rated possibly effective for both high cholesterol and coronary heart health, based on the evidence we hold. That means there's some research backing it, but it's not a guaranteed fix — talk with your doctor about whether it fits your overall plan.
Can I take this if I'm pregnant or breastfeeding?
The safety data for concentrated supplement doses during pregnancy and lactation is limited. Food amounts are fine, but we don't have enough information about this product at supplement levels. Talk with your doctor or pharmacist for personalized advice.
What's oleic acid, and why is it in here?
Oleic acid is a monounsaturated fat — the same healthy fat found in olive oil. It's in this flaxseed product to support heart and cholesterol health.
Are there any side effects I should know about?
No adverse effects are documented in our data for the ingredients we could check. That said, be aware that this product may increase the effects of diabetes medications if you take them.
What are the inactive ingredients for?
Sunflower oil, rosemary extract, ascorbic acid, mixed tocopherols, and citric acid are fillers, preservatives, and stabilizers — they help keep the powder fresh and mixed properly, but they're not the active part of the formula.

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

Not sure if Organic Flaxseed Oil is safe with your meds?

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Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Organic Flaxseed Oil label
Go deeper

The Full Monographs Behind Organic Flaxseed Oil’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Flaxseed Oil

Interacts with 293 drugs

Flaxseed oil is a plant-based source of the omega-3 fatty acid ALA, which the body can partly convert to the omega-3s found in fish oil. It may help support heart health and provide healthy...

Read the full Flaxseed Oil monograph → Herb & supplement monograph

Oleic Acid

Interacts with 86 drugs

Oleic acid is a heart-healthy monounsaturated fat found mainly in olive oil, canola oil, avocados, and nuts. As part of a Mediterranean-style diet, it is widely viewed as a healthier replace...

Read the full Oleic Acid monograph →
Sources

Sources & How We Checked

Organic Flaxseed Oil's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 22 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Oleic Acid 1 reference
  1. Madigan C, Ryan M, Owens D, et al. Dietary unsaturated fatty acids in type 2 diabetes: higher levels of postprandial lipoprotein on a linoleic acid-rich sunflower oil diet compared with an oleic acid-rich olive oil diet. Diabetes Care 2000;23:1472-7. PubMed

See these in context on the Oleic Acid monograph →

Flaxseed Oil 21 references
  1. Kolonel LN, Nomura AM, Cooney RV. Dietary fat and prostate cancer: current status. J Natl Cancer Inst 1999;91:414-28. PubMed
  2. Ramon JM, Bou R, Romea S, et al. Dietary fat intake and prostate cancer risk: a case-control study in Spain. Cancer Causes Control 2000;11:679-85. PubMed
  3. Nordstrom DC, Honkanen VE, Nasu Y, et al. Alpha-linolenic acid in the treatment of rheumatoid arthritis. A double-blind, placebo-controlled and randomized study: flaxseed vs. safflower seed. Rheumatol Int 1995;14:231-4. PubMed
  4. De Stefani E, Deneo-Pellegrini H, Boffetta P, et al. Alpha-linolenic acid and risk of prostate cancer: a case-control study in Uruguay. Cancer Epidemiol Biomarkers Prev 2000;9:335-8.
  5. Giovannucci E, Rimm EB, Colditz GA, et al. A prospective study of dietary fat and risk of prostate cancer. J Natl Cancer Inst 1993;85:1571-9. PubMed
  6. Bloedon LT, Szapary PO. Flaxseed and cardiovascular risk. Nutr Rev 2004;62:18-27. DOI
  7. Laaksonen DE, Laukkanen JA, Niskanen L, et al. Serum linoleic and total polyunsaturated fatty acids in relation to prostate and other cancers: a population-based cohort study. Int J Cancer 2004;111:444-50.. PubMed
  8. Brouwer IA, Katan MB, Zock PL. Dietary alpha-linolenic acid is associated with reduced risk of fatal coronary heart disease, but increased prostate cancer risk: a meta-analysis. J Nutr 2004;134:919-22.
  9. Paschos GK, Magkos F, Panagiotakos DB, et al. Dietary supplementation with flaxseed oil lowers blood pressure in dyslipidaemic patients. Eur J Clin Nutr 2007;61:1201-6. PubMed
  10. Harper CR, Edwards MC, Jacobson TA. Flaxseed oil supplementation does not affect plasma lipoprotein concentration or particle size in human subjects. J Nutr 2006;136:2844-8. PubMed
  11. University of Montreal. Pregnant Women Consuming Flaxseed Oil Have High Risk Of Premature Birth.ScienceDaily, October 29, 2008. Available at: www.sciencedaily.com/releases/2008/10/081027140817.htm (Accessed May 14, 2009).
  12. Allman, M. A., Pena, M. M., and Pang, D. Supplementation with flaxseed oil versus sunflowerseed oil in healthy young men consuming a low fat diet: effects on platelet composition and function. Eur.J Clin.Nutr. 1995;49(3):169-178.
  13. Ursoniu S, Sahebkar A, Andrica F, Serban C, Banach M; Lipid and Blood Pressure Meta-analysis Collaboration Group. Effects of flaxseed supplements on blood pressure: a systematic review and meta-analysis of controlled clinical trial. Clin Nutr. 2016 Jun;3 PubMed
  14. Taghizadeh M, Jamilian M, Mazloomi M, Sanami M, Asemi Z. A randomized-controlled clinical trial investigating the effect of omega-3 fatty acids on vitamin E co-supplementation on markers of insulin metabolism and lipid profiles in gestational diabetes. J
  15. Blackwood DP, LaVallee RK, Al Busaidi A, Jassal DS, Pierce GN. A randomized trial of the effects of ezetimibe on the absorption of omega-3 fatty acids in cardiac disease patients: a pilot study. Clin Nutr ESPEN. 2015 Oct;10(5):e155-e159. PubMed
  16. Morshedzadeh N, Shahrokh S, Aghdaei HA, et al. Effects of flaxseed and flaxseed oil supplement on serum levels of inflammatory markers, metabolic parameters and severity of disease in patients with ulcerative colitis. Complement Ther Med. 2019;46:36-43. PubMed
  17. Downie LE, Hom MM, Berdy GJ, et al. An artificial tear containing flaxseed oil for treating dry eye disease: A randomized controlled trial. Ocul Surf. 2020;18(1):148-157. PubMed
  18. Saleh-Ghadimi S, Kheirouri S, Golmohammadi A, Moludi J, Jafari-Vayghan H, Alizadeh M. Effect of flaxseed oil supplementation on anthropometric and metabolic indices in patients with coronary artery disease: A double-blinded randomized controlled trial. J PubMed
  19. Jamilian M, Tabassi Z, Reiner Z, et al. The effects of n-3 fatty acids from flaxseed oil on genetic and metabolic profiles in patients with gestational diabetes mellitus: a randomised, double-blind, placebo-controlled trial. Br J Nutr. 2020;123(7):792-799
  20. Li L, Li H, Gao Y, Vafaei S, Zhang X, Yang M. Effect of flaxseed supplementation on blood pressure: a systematic review, and dose-response meta-analysis of randomized clinical trials. Food Funct 2023;14(2):675-690. PubMed
  21. Mahmudiono T, Jasim SA, Karim YS, et al. The effect of flaxseed oil consumption on blood pressure among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized clinical trials. Phytother Res 2022;36(10):

See these in context on the Flaxseed Oil monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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