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Dietary supplement

Flax Oil 1000 mg - Vegan Formula Ingredients & Drug Interactions

by NOW

Flax Oil 1000 mg - Vegan Formula label
See full label image
Softgel Capsule Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Flax Oil 1000 mg - Vegan Formula 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

Flax Oil 1000 mg - Vegan Formula is a dietary supplement by NOW 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, 293 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are organic Flax seed 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 Flax Oil 1000 mg - Vegan Formula by NOW

Ask about any prescription or over-the-counter medication and we check it for interactions with Flax Oil 1000 mg - Vegan Formula by NOW — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Flax Oil 1000 mg - Vegan Formula by NOW

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 30, 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 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This softgel contains one active ingredient: organic flaxseed oil at 1,000 mg per capsule. Flaxseed oil is rich in alpha-linolenic acid, an omega-3 fatty acid.

The capsule itself is made from vegetarian material.

Does it work?

Couldn't assess
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
Not assessable

This is a single-ingredient Flaxseed Oil product and its label doesn't state a use — see Flaxseed Oil's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for flaxseed oil in the conditions studied — hyperlipidemia (high cholesterol), obesity, bipolar disorder, and rheumatoid arthritis — is rated as possibly ineffective. This means clinical trials haven't shown clear benefit for these uses.

The evidence, ingredient by ingredient Flaxseed Oil

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 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.

Flaxseed oil is generally well tolerated when taken by mouth. Rare serious side effects like severe allergic reactions have been reported, and a small number of people (about 3%) experience changes in bowel habits, dry mouth, or indigestion at typical doses.

High doses of 30 grams daily or more can cause loose stools and diarrhea. Safety data during breastfeeding is limited, so medical advice is recommended before use.

There isn't enough reliable safety data overall, so check with your doctor before taking it.

Side effects, ingredient by ingredient Flaxseed Oil

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 — Flaxseed Oil.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 293 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.

Before taking this product, check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (Moderate severity — increased bleeding risk), blood pressure medication (Moderate severity — risk of low blood pressure), or ezetimibe/Zetia for cholesterol (Moderate severity — reduced drug absorption).

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Flax oil may be worth considering if you're looking for an omega-3 supplement, though evidence for specific conditions is limited. If you take blood pressure medication, blood thinners, or ezetimibe, you'll need to talk with your doctor or pharmacist first — the interactions could affect how well your medications work or increase your bleeding risk.

Check your exact medications before starting.

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

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2019.

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 Flax Oil 1000 mg - Vegan Formula, straight from the product label.

Brand NOW
Barcode (UPC) 733739017734
Net contents 120 Veggie Softgel(s)
Market status On market
Date entered into DSLD Aug 23, 2019
DSLD ID 205106
Product type Fat/fatty Acid
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free
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 Flax Oil 1000 mg - Vegan Formula by NOW, 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 Veggie Softgel(s)
Maximum serving Sizes:
1 Veggie Softgel(s)
UPC/BARCODE
733739017734
IngredientAmount% DV
Calories10 Calorie(s)--
Total Fat1 Gram(s)1%
organic Flax seed Oil1 Gram(s)--

Other ingredients: Vegetarian Softgel Capsule

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.
Suggested/Recommended/Usage/Directions

Suggested Usage: Take 1 softgel 1 to 3 times daily with food.

Formula

Flax Oil is a natural reservoir for the omega-3 fatty acid, Alpha-Linolenic Acid (ALA). ALA is considered an essential fatty acid, because the body cannot make it from other fats and must obtain it from the diet. Flax Oil has been shown to support cardiovascular health and to promote the maintenance of healthy skin. This flax seed oil has been specially pressed to be as close to the original oil in the seed as possible. Extreme care has been taken in bringing this product to the market in the softgel form, which seals in the oil and protects it from oxidation and contamination.

With essentials omega-3s

Each softgel may typically have 50% naturally occurring alpha-linolenic acid (omega-3).

FDA Disclaimer Statement

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

Precautions

Caution: For adults only. Flax Oil is generally well tolerated, but may be associated with mild temporary gastro-intestinal disturbances.

Consult physician if pregnant/nursing, taking medication, or have a medical condition, including allergy to flaxseed.

Consult physician if pregnant/nursing, taking medication, or have a medical condition, including allergy to flaxseed.

Keep out of reach of children.

Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish or shellfish ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

General Statements

Natural color variation may occur in this product.

Cardiovascular support

Nutritional oils Family owned since 1968.

Storage

Store in a cool, dry place after opening.

Formulation

Cold pressed, hexane free

Non-GMO

Vegetarian/Vegan

Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish or shellfish ingredients.

Seals/Symbols

Non-GMO

GMP Quality Assured

FDA Statement of Identity

A Dietary Supplement

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

See for yourself

Flax Oil 1000 mg - Vegan Formula by NOW label

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

Flax Oil 1000 mg - Vegan Formula 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 Flax Oil 1000 mg - Vegan Formula by NOW

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

Serving size1 Veggie Softgel(s) Dosage formSoftgel Capsule Amounts shown are per serving.

Organic Flax seed Oil

Interacts with
293 drugs
1 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...

Organic Flax seed Oil monograph & interactions

Other (inactive) ingredients: Vegetarian Softgel Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Flax Oil 1000 mg - Vegan Formula by NOW Drug Interactions

Want to check YOUR meds against Flax Oil 1000 mg - Vegan Formula?

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
293Drugs
293 Moderate

Ingredients driving the most interactions

organic Flax seed Oil 293

Individual Drug Interactions

The ingredients in Flax Oil 1000 mg - Vegan Formula interact with 293 drugs. Click any drug to see the details.

1 of the 1 ingredient in Flax Oil 1000 mg - Vegan Formula interact with drugs. Each result below shows which ingredient is responsible. organic Flax seed Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Flax Oil 1000 mg - Vegan Formula 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 Flax seed 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 Flax seed Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Flax Oil 1000 mg - Vegan Formula, from the product label.

NOW

See all NOW products
Name
NOW Foods
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
nowfoods.com
Pharmacist Counseling Corner

Flax Oil 1000 mg - Vegan Formula by NOW: Common Questions

Does Flax Oil 1000 mg - Vegan Formula by NOW interact with any medications?
Yes. Based on its ingredients, Flax Oil 1000 mg - Vegan Formula has a known interaction with 293 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Flax Oil 1000 mg - Vegan Formula 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 flax oil help lower my cholesterol or help me lose weight?
The evidence for flaxseed oil to treat high cholesterol or obesity is rated as possibly ineffective. Clinical trials haven't shown clear benefit for these conditions, so it shouldn't be counted on as a treatment.
What side effects might I experience?
Most people tolerate it well. About 3% of users report mild side effects like changes in bowel habits, dry mouth, or indigestion. Very high doses (30 grams daily or more) can cause loose stools or diarrhea. Severe allergic reactions are rare.
Is it safe to take while pregnant?
Flaxseed oil is rated as possibly safe in pregnancy, but there isn't robust safety data. Talk with your doctor before taking it during pregnancy to make a decision that fits your situation.
Can I take it while breastfeeding?
Safety data during breastfeeding is limited. Medical advice is recommended before use, so discuss it with your doctor or pharmacist before taking it while breastfeeding.
Does flaxseed oil increase prostate cancer risk?
No — flaxseed oil has not been linked to increased prostate cancer risk. While some research suggests high dietary intake of alpha-linolenic acid from certain sources is associated with prostate cancer risk, that risk doesn't apply to alpha-linolenic acid from plant sources like flax.

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

Not sure if Flax Oil 1000 mg - Vegan Formula is safe with your meds?

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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.

Flax Oil 1000 mg - Vegan Formula label
Go deeper

The Full Monographs Behind Flax Oil 1000 mg - Vegan Formula’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 →
Sources

Sources & How We Checked

Flax Oil 1000 mg - Vegan Formula'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 21 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.

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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