Interactions on record — worth a quick check against your medications. Based on 1 of 3 ingredients. Check your meds →
Dietary supplement

Fresh Flax Oil Ingredients & Drug Interactions

by Barlean's

Fresh Flax Oil label
See full label image
Softgel Capsule Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Fresh 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

Fresh Flax Oil is a dietary supplement by Barlean's with 3 active ingredients. Its ingredients are commonly taken for heart health, healthy cooking fat, skin moisturizing.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Oleic Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Fresh Flax Oil by Barlean's

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

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Fresh Flax Oil by Barlean's

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

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 5 of its 5 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Barlean's Fresh Flax Oil is a softgel with 5 active ingredients centered on healthy fats. Oleic acid, linoleic acid, and alpha linolenic acid are all fatty acids — the building blocks of the oil itself.

Polyunsaturated and monounsaturated fats round out the profile. The softgels also contain flaxseed oil, modified tapioca starch, water, and glycerine as inactive ingredients to hold everything together.

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: High in omega-3 fatty acid ALA for nutrition.
  • We looked for evidence on: Coronary heart disease (CHD), Hypercholesterolemia, Hypertension, Stroke, Cardiovascular health, Inflammation — and 1 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 — one of the main fatty acids in this product — is possibly effective for lowering cholesterol and supporting heart health. We don't have effectiveness data on file for the other fatty acids in this formulation, so we can't speak to how well the complete product works for any particular goal.

If you're taking this for cholesterol or heart health, talk to your doctor about whether flax oil is the right choice for your situation.

The evidence, ingredient by ingredient 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 amounts — like what you'd get from olive oil in a meal — is well tolerated and generally recognized as safe. Concentrated supplements of oleic acid, though, haven't been well studied, especially in pregnancy and breastfeeding.

There's not enough safety data to know either way if supplement-level doses are okay during pregnancy or while nursing. Talk with your doctor or pharmacist if you're pregnant, planning to become pregnant, or breastfeeding before you start this product.

We don't have adverse effect data on file for this formulation.

Side effects, ingredient by ingredient 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 (insulin, metformin, sulfonylureas, or similar), tell your pharmacist you're starting this — oleic acid may increase how strongly they work and could lower your blood sugar more than expected. We couldn't check the other fatty acids in this product, so run your full medication list through the checker below before you begin.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.

This product is a straightforward flax oil softgel built mostly from fatty acids. If you take antidiabetes medication, check with your pharmacist first — oleic acid might strengthen your drug's effect on blood sugar.

If you're pregnant, nursing, or thinking about it, ask your pharmacist whether supplement-level flax oil is right for you.

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 Aug 22, 2025.

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 Fresh Flax Oil, straight from the product label.

Brand Barlean's
Barcode (UPC) 705875802321
Net contents 100 Softgel(s)
Market status On market
Date entered into DSLD Aug 22, 2025
DSLD ID 337675
Product type Fat/fatty Acid
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other
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 Fresh Flax Oil by Barlean's, 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:
3 Softgel(s)
Maximum serving Sizes:
3 Softgel(s)
Servings per container
33
UPC/BARCODE
705875802321
IngredientAmount% DV
Total Fat3 Gram(s)4%
Polyunsaturated Fat2 Gram(s)--
Monounsaturated Fat0.5 Gram(s)--
Calories30 Calorie(s)--
Total Carbohydrate1 Gram(s)1%
Oleic Acid480 mg--
Linoleic Acid410 mg--
Alpha Linolenic Acid1650 mg--

Other ingredients: Flaxseed Oil, modified Tapioca Starch, Water, Glycerine

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.
Formulation

100% vegan

Fresh cold-pressed, for maximum nutrition.

Pure & unrefined

Non-GMO & gluten free

FreshTech Patented softgel technology

All new vegan softgels

Gluten free Non-GMO

Freshly cold pressed

Formula

Our clear fresh flax oil is gently cold-pressed and never heated, to maintain the best taste and nutrition. High in ALA, a vital omega-3 fatty acid

World's freshest Flax Oil

Brand IP Statement(s)

FreshTech Patented softgel technology

Barlean's Estd 1989

General Statements

From our family to yours Barbara Barlean David Barlean Bruce Barlean Learn more about a pathway to a better life: barleans.com

Suggested/Recommended/Usage/Directions

Suggested use: 3 softgels up to 3 times daily.

Storage

Keep bottle tightly closed. Store in a cool, dry place, out of reach of children.

Precautions

Store in a cool, dry place, out of reach of children.

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

Fresh Flax Oil by Barlean's label

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

Fresh 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 Fresh Flax Oil by Barlean's

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size3 Softgel(s) Dosage formSoftgel Capsule Servings per container33 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Oleic Acid

Interacts with
86 drugs
480 mg per serving

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...

Oleic Acid monograph & interactions

Linoleic Acid

410 mg per serving

Alpha Linolenic Acid

1650 mg per serving

Other (inactive) ingredients: Flaxseed Oil, Modified Tapioca Starch, Water, Glycerine. These complete the product’s ingredient list but are not active constituents.

Interaction report

Fresh Flax Oil by Barlean's Drug Interactions

Want to check YOUR meds against Fresh 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
86Drugs
86 Moderate

Ingredients driving the most interactions

Oleic Acid 86

Individual Drug Interactions

The ingredients in Fresh Flax Oil interact with 86 drugs. Click any drug to see the details.

1 of the 3 ingredients in Fresh Flax Oil interact with drugs. Each result below shows which ingredient is responsible. Oleic Acid

Each ingredient & the kinds of drugs it affects

For each ingredient in Fresh 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.

Oleic Acid1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, oleic acid might increase the effects of antidiabetes drugs. Preliminary clinical research in patients with type 2 diabetes taking oral hypoglycemic drugs shows that eating a diet rich in oleic acid from olive oil decreases fasting blood glucose levels when compared to eating a diet rich in linoleic acid from sunflower oil. It is unknown if taking oleic acid supplements would have this effect or if this change is clinically significant. Until more is known, use caution. Dose adjustment may be necessary. Some antidiabetes drugs include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, metformin (Glucophage), pioglitazone (Actos), rosiglitazone (Avandia), and others.

Likelihood Possible Evidence B
Oleic Acid full monograph & interactions
The maker

Brand information

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

Barlean's

See all Barlean's products
Name
Barlean's
City
Ferndale
State
WA
ZipCode
98248
Phone Number
800-445-3529
Web Address
barleans.com
Pharmacist Counseling Corner

Fresh Flax Oil by Barlean's: Common Questions

Does Fresh Flax Oil by Barlean's interact with any medications?
Yes. Based on its ingredients, Fresh Flax Oil has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Fresh Flax Oil contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
What's actually in Barlean's Fresh Flax Oil?
It's a softgel capsule with flaxseed oil and three types of fatty acids — oleic acid, linoleic acid, and alpha linolenic acid — plus polyunsaturated and monounsaturated fats. The capsule itself is made from modified tapioca starch, water, and glycerine.
Can I take this if I'm on diabetes medication?
That's a good question to ask your pharmacist. Oleic acid in this product may strengthen your diabetes medication's effect on blood sugar, so your doctor might need to adjust your dose or monitor you more closely.
Is this safe to take while pregnant or breastfeeding?
We don't have enough safety data on supplement-level doses of oleic acid during pregnancy or breastfeeding. Food amounts are fine, but the concentrated dose in a supplement hasn't been well studied. Talk to your doctor or pharmacist before taking this if you're pregnant, nursing, or planning to become pregnant.
Does this actually work for cholesterol or heart health?
Oleic acid — one of the main ingredients — is possibly effective for both. But we don't have effectiveness data for the other fatty acids in the formulation, so we can't say how the whole product performs. Your doctor can help you figure out if flax oil fits your health goals.
What side effects should I watch for?
We don't have adverse effect data on file for this specific product. Start with your pharmacist if you have concerns, especially if you notice any unusual changes after you begin taking it.

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

Not sure if Fresh 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.

Fresh Flax Oil label
Go deeper

The Full Monographs Behind Fresh Flax Oil’s Ingredients

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

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

Fresh 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 19 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 19 references
  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
  2. Gillingham, L. G., Gustafson, J. A., Han, S. Y., Jassal, D. S., and Jones, P. J. High-oleic rapeseed (canola) and flaxseed oils modulate serum lipids and inflammatory biomarkers in hypercholesterolaemic subjects. Br J Nutr 2011;105(3):417-427. PubMed
  3. Jones PJ, Senanayake VK, Pu S, Jenkins DJ, Connelly PW, Lamarche B, Couture P, Charest A, Baril-Gravel L, West SG, Liu X, Fleming JA, McCrea CE, Kris-Etherton PM. DHA-enriched high-oleic acid canola oil improves lipid profile and lowers predicted cardiova
  4. Cater, N. B., Heller, H. J., and Denke, M. A. Comparison of the effects of medium-chain triacylglycerols, palm oil, and high oleic acid sunflower oil on plasma triacylglycerol fatty acids and lipid and lipoprotein concentrations in humans. Am.J Clin.Nutr PubMed
  5. Mozaffarian D, Clarke R. Quantitative effects on cardiovascular risk factors and coronary heart disease risk of replacing partially hydrogenated vegetable oils with other fats and oils. Eur J Clin Nutr. 2009;63(Suppl 2):S22-33. PubMed
  6. Cao Y, Hou L, Wang W. Dietary total fat and fatty acids intake, serum fatty acids and risk of breast cancer: A meta-analysis of prospective cohort studies. Int J Cancer. 2016;138(8):1894-904. doi: 10.1002/ijc.29938. PubMed
  7. FDA completes review of qualified health claim petition for oleic acid and the risk of coronary heart disease. November 2018. Available at: www.fda.gov/Food/NewsEvents/ConstituentUpdates/ucm624758.htm. Accessed January 25, 2019.
  8. Liu X, Kris-Etherton PM, West SG, et al. Effects of canola and high-oleic-acid canola oils on abdominal fat mass in individuals with central obesity. Obesity. 2016;24(11):2261-2268. PubMed
  9. Bowen KJ, Kris-Etherton PM, West SG, et al. Diets enriched with conventional or high-oleic acid canola oils lower atherogenic lipids and lipoproteins compared to a diet with a western fatty acid profile in adults with central adiposity. J Nutr. 2019;149(3 PubMed
  10. Steffen BT, Duprez D, Szklo M, Guan W, Tsai MY. Circulating oleic acid levels are related to greater risks of cardiovascular events and all-cause mortality: The Multi-Ethnic Study of Atherosclerosis. J Clin Lipidol. 2018;12(6):1404-1412. PubMed
  11. Banim PJ, Luben R, Khaw KT, Hart AR. Dietary oleic acid is inversely associated with pancreatic cancer - Data from food diaries in a cohort study. Pancreatology. 2018;18(6):655-660. PubMed
  12. Morin SJ, Gaziano JM, Djoussé L. Relation between plasma phospholipid oleic acid and risk of heart failure. Eur J Nutr. 2018;57(8):2937-2942. PubMed
  13. Samieri C, Féart C, Proust-Lima C, et al. Olive oil consumption, plasma oleic acid, and stroke incidence: the Three-City Study. Neurology. 2011;77(5):418-25. PubMed
  14. Compher CW, Kinosian BP, Rubesin SE, Ratcliffe SJ, Metz DC. Energy absorption is reduced with oleic acid supplements in human short bowel syndrome. JPEN J Parenter Enteral Nutr. 2009;33(1):102-8. PubMed
  15. Ben Fradj MK, Ouanes Y, Hadj-Taieb S, et al. Decreased oleic acid and marine n?-?3 polyunsaturated fatty acids in Tunisian patients with urothelial bladder cancer. Nutr Cancer. 2018;70(7):1043-1050.
  16. de Silva PS, Luben R, Shrestha SS, Khaw KT, Hart AR. Dietary arachidonic and oleic acid intake in ulcerative colitis etiology: a prospective cohort study using 7-day food diaries. Eur J Gastroenterol Hepatol. 2014;26(1):11-8. PubMed
  17. Higashi K, Shige H, Ito T, et al. Effect of a low-fat diet enriched with oleic acid on postprandial lipemia in patients with type 2 diabetes mellitus. Lipids. 2001;36(1):1-6. PubMed
  18. Lin HC, van Citters GW, Heimer F, Bonorris G. Slowing of gastrointestinal transit by oleic acid: a preliminary report of a novel, nutrient-based treatment in humans. Dig Dis Sci. 2001;46(2):223-9. PubMed
  19. Li D, Tong Y, Li Y. Associations between dietary oleic acid and linoleic acid and depressive symptoms in perimenopausal women: The Study of Women's Health Across the Nation. Nutrition. 2020 Mar;71:110602. PubMed

See these in context on the Oleic Acid 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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team