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Dietary supplement

Organic Flax Oil Ingredients & Drug Interactions

by Vitamin World

Organic Flax Oil label
See full label image
Liquid Category: Botanical With Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Oct 7, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Organic Flax 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 Flax Oil is a dietary supplement by Vitamin World 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 Organic Flaxseed Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Organic Flax Oil by Vitamin World

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

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HelloPharmacist Scorecard of Organic Flax Oil by Vitamin World

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 Aug 27, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 6 of its 6 active ingredients.
  • “Organic Flaxseed Oil” is listed as a grouped ingredient — the label gives one combined amount (13,950 mg) without saying how much of each component you get.

Vitamin World's Organic Flax Oil is a liquid supplement made from flaxseed. It contains 6 active ingredients: polyunsaturated fat, monounsaturated fat, linoleic acid, oleic acid, alpha-linolenic acid, and other fatty acids.

These are all naturally occurring fats found in flax. The product contains organic flax oil as an inactive ingredient.

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

This product doesn't appear to be marketed for a specific use, so we graded Oleic Acid's overall clinical evidence instead.

Moderate

Some clinical evidence supports Oleic Acid for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Coronary heart disease (CHD) — rated "Possibly Effective" (Natural Medicines).
  • On file: Hypercholesterolemia — rated "Possibly Effective" (Natural Medicines).

Oleic acid, one of the fatty acids in this product, is rated possibly effective for lowering cholesterol (hypercholesterolemia) and supporting heart health (coronary heart disease). The evidence is preliminary, so results aren't guaranteed.

We don't have effectiveness ratings for the other fatty acids in the facts we hold.

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 is generally recognized as safe when you get it from foods like olive oil. However, concentrated supplements haven't been well studied, especially in pregnancy and while breastfeeding — food amounts are considered safe, but supplement-level doses lack good safety data.

If you're pregnant, nursing, or planning to become pregnant, talk with your doctor or pharmacist before taking this product.

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 diabetes medications (antidiabetes drugs), check with your doctor or pharmacist before starting this product — oleic acid may increase their effects and lower your blood sugar more than intended. We could not check the other fatty acids in this supplement for interactions.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and some safety-information gaps remain.

Organic Flax Oil may be worth considering if you're interested in heart health and cholesterol support from a natural source. If you take diabetes medications, check with your doctor or pharmacist first — the oleic acid in this product might affect how those drugs work.

Talk it over with your own healthcare provider before you start.

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

Assessment coverage: 1 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 26, 2011.

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 Flax Oil, straight from the product label.

Brand Vitamin World
Barcode (UPC) 074312764202
Net contents 16 fl. Oz.; 473 mL
Market status On market
Date entered into DSLD Oct 26, 2011
DSLD ID 1229
Product type Botanical With Nutrients
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, 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 Flax Oil by Vitamin World, 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:
1 Tbsp
Maximum serving Sizes:
1 Tbsp
Servings per container
31
UPC/BARCODE
074312764202
IngredientAmount% DV
Calories120 {Calories}--
Calories from Fat120 {Calories}--
Total Fat14 g21%
Saturated Fat1.5 g7%
Polyunsaturated Fat10 g--
Monounsaturated Fat3 g--
Linoleic Acid1687 mg--
Oleic Acid1953 mg--
Alpha-Linolenic Acid6975 mg--
Other Fatty Acids1004 mg--
Organic Flaxseed Oil13950 mg--

Other ingredients: organic Flax Oil

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.
Brand IP Statement(s)

(C)2010 Vitamin World, Inc.

Get healthy.

FDA Disclaimer Statement

*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

FDA Statement of Identity

DIETARY SUPPLEMENT

Formulation

No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

Certified Organic by QAI

VEGETARIAN FORMULA

Precautions

WARNING: If you are pregnant, nursing or taking any medications, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Store in a cool, dry place. Refrigerate after opening. Do not use if outer seal is broken or missing.

General Statements

100% SOLVENT FREE

COLD PRESSED

MOTHER NATUR'S OMEGA-3, 6 & 9

NATURAL SOURCE OF HEART HEALTHY NUTRIENTS*

Our Organic Flax Oil is filled under a nitrogen blanket to safeguard it from oxygen exposure. It is packaged in a climate-controlled atmosphere under yellow lights to ensure the highest level of freshness and potency. We also utilize a dark container to minimize light exposure.

PURE & UNREFINED

QUALITY ASSURED For over 40 years, Vitamin World has pioneered the manufacture of premium nutritional supplements. Our commitment to quality is the highest in our industry. Every product undergoes rigorous analysis for purity, potency, safety and freshneshness. We guarantee it.

Through a unique cold processing method, the flaxseeds are pressed at very cold temperatures and are processed without solvents.

General

PROD. #6420 B6420 07D

Seals/Symbols

USDA ORGANIC

Suggested/Recommended/Usage/Directions

DIRECTIONS: SHAKE WELL. For adults, take one (1) tablespoon (15 mL) daily, with a meal.

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

See for yourself

Organic Flax Oil by Vitamin World label

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

Organic Flax 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 Flax Oil by Vitamin World

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

Serving size1 Tbsp Dosage formLiquid Servings per container31 Amounts shown are per serving.

Organic Flaxseed Oil

Interacts with
293 drugs
13950 mg 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...

Organic Flaxseed Oil monograph & interactions
  • › Linoleic Acid
  • › Oleic Acid
  • › Alpha-Linolenic Acid
  • › Other Fatty Acids

Other (inactive) ingredients: Organic Flax Oil. These complete the product’s ingredient list but are not active constituents.

Interaction report

Organic Flax Oil by Vitamin World Drug Interactions

Want to check YOUR meds against Organic Flax 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

Organic Flaxseed Oil 293

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Organic Flax 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.

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
Organic Flaxseed Oil full monograph & interactions
The maker

Brand information

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

Vitamin World

See all Vitamin World products
Phone Number
1-800-228-4533
Web Address
www.vitaminworld.com
Pharmacist Counseling Corner

Organic Flax Oil by Vitamin World: Common Questions

Does Organic Flax Oil by Vitamin World interact with any medications?
Yes. Based on its ingredients, Organic Flax 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 Flax 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.
Does flax oil help with cholesterol?
Oleic acid, one of the fats in this product, is rated possibly effective for lowering cholesterol and supporting heart health. The evidence is still preliminary, so results vary.
Is this safe to take during pregnancy or while breastfeeding?
There isn't enough data on concentrated flax oil supplements in pregnancy and lactation to know either way. Food amounts of oleic acid are considered safe, but supplement-level doses lack good safety data. Talk with your doctor or pharmacist for personalized advice.
What's the difference between this and fish oil?
This product is plant-based flax oil, so it contains different types of fatty acids than fish oil. We don't have a direct comparison in our data, but your pharmacist can help you figure out which might be better for your needs.
Can I take this if I'm on blood thinners?
We don't have documented interaction data for blood thinners with the ingredients we could check in this product. That said, always run your exact medications through a checker before starting any supplement, or ask your pharmacist or doctor.
What are the side effects?
We don't have side effect data on file for this product. If you notice anything unusual after starting it, talk with your pharmacist or doctor.

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

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

Our pharmacists answer your medication & supplement questions — free.

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 Flax Oil label
Go deeper

The Full Monographs Behind Organic Flax 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 Flax 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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