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Dietary supplement

Blackcurrant Seed Oil Ingredients & Drug Interactions

by Biotics Research Corporation

Blackcurrant Seed Oil label
See full label image
Capsule Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Blackcurrant Seed 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

Blackcurrant Seed Oil is a dietary supplement by Biotics Research Corporation with 1 active ingredient. Its ingredients are commonly taken for dry eyes and eye strain, joint pain and inflammation, immune and general wellness support.Based on those ingredients, 140 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Blackcurrant Seed 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 Blackcurrant Seed Oil by Biotics Research Corporation

Ask about any prescription or over-the-counter medication and we check it for interactions with Blackcurrant Seed Oil by Biotics Research Corporation — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Blackcurrant Seed Oil by Biotics Research Corporation

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 16, 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 supplement contains one active ingredient: blackcurrant seed oil, which is extracted from the seeds of the blackcurrant berry. The rest is inactive ingredients—gelatin (the capsule), glycerin, and water—that hold everything together.

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 Black Currant product and its label doesn't state a use — see Black Currant'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 blackcurrant seed oil is insufficient for the conditions on file—Alzheimer disease, liver disease, upper respiratory tract infections, cough, and atopic dermatitis (eczema). Our data doesn't establish that it's effective for any of these uses.

The evidence, ingredient by ingredient Black Currant

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.

Blackcurrant berries eaten as food are generally well tolerated, but concentrated supplements like this one are much less studied. In one trial of about 2,154 people with high cholesterol taking blackcurrant seed oil for 6 weeks, mild diarrhea was reported in a small number of participants a few days after starting.

There isn't enough information on concentrated supplements to know whether they're safe in pregnancy or while breastfeeding—talk with your doctor or pharmacist about whether this is right for you if you're pregnant or nursing.

Side effects, ingredient by ingredient Black Currant

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 — Black Currant.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 140 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.

Check your medications before taking this product if you're on blood thinners or antiplatelet drugs (like warfarin or aspirin)—blackcurrant seed oil may increase bleeding risk. Also verify with your doctor or pharmacist if you take any antipsychotic medications (phenothiazines), as there's a theoretical concern about seizure risk.

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.

Blackcurrant seed oil might help with certain health concerns, but the evidence is too thin for us to say it works. More importantly, if you take blood thinners, antiplatelet drugs, or antipsychotics, this supplement could be risky.

Check with your doctor or pharmacist before you start, especially if you're on any prescription medications.

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 May 24, 2013.

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 Blackcurrant Seed Oil, straight from the product label.

Brand Biotics Research Corporation
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD May 24, 2013
DSLD ID 21517
Product type Fat/fatty Acid
Supplement form Capsule
Dietary claims / uses Nutrient, All Other
Intended target group(s) Adult (18 - 50 Years)
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 Blackcurrant Seed Oil by Biotics Research Corporation, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
IngredientAmount% DV
Blackcurrant Seed Oil535 mg--

Other ingredients: Gelatin, Glycerin, Water

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

RECOMMENDATION: One (1) capsule each day as a dietary supplement or as otherwise directed by a healthcare professional.

Brand IP Statement(s)

(C) Copyright 2008

Precautions

KEEP OUT OF REACH OF CHILDREN

Storage

Store in a cool, dry area.

General Statements

Sealed with an imprinted safety seal for your protection.

Lot Number: 34243A Exp. Date: JAN 13

General

Rev. 8/08

FDA Statement of Identity

GLA Dietary Supplement

Formula

Each softgel capsule contains 535 mg of pure Blackcurrant Seed Oil providing Gamma linolenic acid (80 mg), Alpha linolenic acid (55 mg), Linolenic acid (235 mg), Oleic acid (55 mg) and Palmitic and Stearic acid (35 mg).

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

See for yourself

Blackcurrant Seed Oil by Biotics Research Corporation label

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

Blackcurrant Seed 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 Blackcurrant Seed Oil by Biotics Research Corporation

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

Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Blackcurrant Seed Oil

Interacts with
140 drugs
535 mg per serving

Black currant is a nutritious berry that is rich in vitamin C and antioxidants, and its seed oil contains the omega-6 fatty acid GLA. While it is enjo...

Blackcurrant Seed Oil monograph & interactions

Other (inactive) ingredients: Gelatin, Glycerin, Water. These complete the product’s ingredient list but are not active constituents.

Interaction report

Blackcurrant Seed Oil by Biotics Research Corporation Drug Interactions

Want to check YOUR meds against Blackcurrant Seed 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
140Drugs
140 Moderate

Ingredients driving the most interactions

Blackcurrant Seed Oil 140

Individual Drug Interactions

The ingredients in Blackcurrant Seed Oil interact with 140 drugs. Click any drug to see the details.

1 of the 1 ingredient in Blackcurrant Seed Oil interact with drugs. Each result below shows which ingredient is responsible. Blackcurrant Seed Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Blackcurrant Seed 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.

Blackcurrant Seed Oil2 drug types · 140 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, black currant seed oil might increase the risk of bleeding if used in combination with anticoagulant or antiplatelet drugs.
Gamma-linolenic acid (GLA), a constituent of black currant seed oil, appears to have antiplatelet effects.

Likelihood Possible Evidence D
Phenothiazines

Theoretically, black currant seed oil might increase the risk of seizure in patients receiving phenothiazines.
Black currant seed oil contains gamma-linolenic acid (GLA). There is some concern that taking supplements containing GLA might cause seizures, or lower the seizure threshold, when taken with phenothiazines, although there is no evidence that black currant seed oil causes seizures. In one report, three patients with schizophrenia who had received phenothiazines developed EEG changes suggestive of temporal lobe epilepsy after starting treatment with GLA, although none experienced an actual seizure. In another report, two patients with schizophrenia who were stabilized on phenothiazines developed seizures when evening primrose 4 grams daily, which contains GLA, was added. One of these patients had a prior history of seizures.

Likelihood Possible Evidence D
Blackcurrant Seed Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Blackcurrant Seed Oil, from the product label.

Biotics Research Corporation

See all Biotics Research Corporation products
Name
BIOTICS RESEARCH CORP.
City
Rosenberg
State
Texas
Phone Number
(281) 344-0909
Pharmacist Counseling Corner

Blackcurrant Seed Oil by Biotics Research Corporation: Common Questions

Does Blackcurrant Seed Oil by Biotics Research Corporation interact with any medications?
Yes. Based on its ingredients, Blackcurrant Seed Oil has a known interaction with 140 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Blackcurrant Seed 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.
Can I take this if I'm on aspirin or a blood thinner?
Not without checking with your doctor first. Blackcurrant seed oil contains GLA, which has antiplatelet effects and may increase your bleeding risk when combined with blood thinners like warfarin or antiplatelet drugs like aspirin. Talk it over with your doctor or pharmacist before starting.
What side effects does blackcurrant seed oil cause?
In a large trial, mild diarrhea was reported in a small number of people taking it for 6 weeks, typically appearing a few days after they started. That's the main adverse effect on record.
Does blackcurrant seed oil actually work for Alzheimer disease or eczema?
We don't have enough reliable evidence to say. The data we hold rates it as insufficient evidence for Alzheimer disease, liver disease, upper respiratory infections, cough, and eczema.
Is this safe if I'm pregnant or breastfeeding?
We don't have enough information on concentrated supplements to know either way. The berry itself in food amounts is likely fine, but talk with your doctor or pharmacist about whether this supplement is right for you during pregnancy or while nursing.
What's the difference between eating blackcurrants and taking this supplement?
Eating the berries as food is generally well tolerated. This supplement is a concentrated form, and concentrated supplements are less studied and should be used more carefully—so check with your doctor before starting.

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

Not sure if Blackcurrant Seed Oil 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.

Blackcurrant Seed Oil label
Go deeper

The Full Monographs Behind Blackcurrant Seed Oil’s Ingredients

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

Herb & supplement monograph

Black Currant

Interacts with 140 drugs

Black currant is a nutritious berry that is rich in vitamin C and antioxidants, and its seed oil contains the omega-6 fatty acid GLA. While it is enjoyed safely as a food and is popular as a...

Read the full Black Currant monograph →
Sources

Sources & How We Checked

Blackcurrant Seed 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 6 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.

Black Currant 6 references
  1. Guivernau M, Meza N, Barja P, Roman O. Clinical and experimental study on the long-term effect of dietary gamma-linolenic acid on plasma lipids, platelet aggregation, thromboxane formation, and prostacyclin production. Prostaglandins Leukot Essent Fatty A PubMed
  2. Fa-lin Z, Zhen-yu W, Yan H, et al. Efficacy of blackcurrant oil soft capsule, a Chinese herbal drug, in hyperlipidemia treatment. Phytother Res 2010;24 Suppl 2:S209-13. PubMed
  3. Holman CP and Bell AF. A trial of evening primrose oil in the treatment of chronic schizophrenia. J Orhtomolecular Psych 1983;12:302-304.
  4. Vaddadi KS. The use of gamma-linolenic acid and linoleic acid to differentiate between temporal lobe epilepsy and schizophrenia. Prostaglandins Med 1981;6(4):375-379. PubMed
  5. Norred, C. L. and Brinker, F. Potential coagulation effects of preoperative complementary and alternative medicines. Alt Ther 2001;7(6):58-67.
  6. Puri BK. The safety of evening primrose oil in epilepsy. Prostaglandins Leukotrienes Essential Fatty Acids 2007;77:101-3. PubMed

See these in context on the Black Currant 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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