Interactions on record — worth a quick check against your medications. Based on 1 of 2 ingredients. Check your meds →
Dietary supplement

Black Currant Oil 535 mg Ingredients & Drug Interactions

by Wonder Laboratories

Black Currant Oil 535 mg 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 Black Currant Oil 535 mg 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

Black Currant Oil 535 mg is a dietary supplement by Wonder Laboratories with 2 active ingredients. 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 Black Currant 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 Black Currant Oil 535 mg by Wonder Laboratories

Ask about any prescription or over-the-counter medication and we check it for interactions with Black Currant Oil 535 mg by Wonder Laboratories — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Black Currant Oil 535 mg by Wonder Laboratories

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 2 of its 2 active ingredients.
  • “Approximate Fatty Acid content” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.

This product has 2 active ingredients: black currant oil and gamma-linolenic acid (GLA). Black currant oil is an extract from the seeds of black currant berries, rich in essential fatty acids that your body can't make on its own.

The product also contains gelatin and vegetable glycerin as inactive ingredients (the capsule material and a preservative base).

Does it work?

Not established
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 established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Black Currant's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: essential fatty acids for nutrient support.
  • We looked for evidence on: Dry eye, Atopic dermatitis (eczema), Hyperlipidemia, Hypertension, Osteoarthritis, Rheumatoid arthritis (RA) — and 3 related terms.
  • The closest evidence on file: Black Currant is rated "Insufficient Reliable Evidence To Rate" for Atopic dermatitis (eczema) (Natural Medicines).
  • Also on file: Black Currant is rated "Insufficient Reliable Evidence To Rate" for Dry eye, Hyperlipidemia, Hypertension, Osteoarthritis, and more.

The evidence we hold doesn't establish that black currant oil works for Alzheimer disease, liver disease, upper respiratory tract infection, cough, or atopic dermatitis (eczema). All of those conditions are rated as having insufficient reliable evidence to rate.

This doesn't mean it doesn't help — just that the studies we have aren't strong enough yet to say one way or the other.

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.

The berry itself in food amounts is considered safe, but this is a concentrated supplement, and there's less safety data on it at that strength. The main side effect reported in trials was mild diarrhea — a small number of people (8 out of over 2,100) taking a higher dose (1.8 grams twice daily) experienced it within 2 to 10 days of starting.

You should talk with your doctor or pharmacist before starting, especially if you have any digestive issues or are considering this long-term. There isn't enough data on black currant oil in pregnancy or breastfeeding to know if it's safe, so check with your doctor 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.

Before you take this, check your medications against blood thinners and antiplatelet drugs (like warfarin, clopidogrel, and aspirin) — black currant oil may increase bleeding risk if combined with them (Moderate severity). Also flag any phenothiazine medications you take, as there's a moderate theoretical concern about seizure risk.

Use the tool below to cross-check your exact drugs.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Black currant oil is generally well tolerated at the dose in this product, but if you take blood thinners, antiplatelet drugs, or phenothiazine medications, you'll need to clear it with your doctor or pharmacist first. The evidence doesn't yet show it works for the conditions it's marketed for.

If you don't take those medication types and are interested in trying it, run your exact medications through the checker on this page before you start.

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

Assessment coverage: 1 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 24, 2020.

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 Black Currant Oil 535 mg, straight from the product label.

Brand Wonder Laboratories
Barcode (UPC) 099528389100
Net contents 100 Softgel(s)
Market status On market
Date entered into DSLD Mar 24, 2020
DSLD ID 215172
Product type Fat/fatty Acid
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other
Intended target group(s) Adult (18 - 50 Years), Gluten 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 Black Currant Oil 535 mg by Wonder Laboratories, 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 Softgel(s)
Maximum serving Sizes:
3 Softgel(s)
UPC/BARCODE
099528389100
IngredientAmount% DV
Gamma-Linolenic Acid80 mg--
Black Currant Oil535 mg--
Approximate Fatty Acid content0 NP--

Other ingredients: Gelatin, Vegetable Glycerin

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.
Formula

EFAs Essential Fatty Acids. Alpha, Gamma Linolenic acids and Linoleic acid.

Wonder utilizes high quality Black Currant Oil.

Precautions

Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.

Keep out of reach of children.

Caution: If you are pregnant or nursing, consult your physician before taking this product.

Formulation

Manufactured in an FDA Registered Facility using Good Manufacturing Practices (GMPs)

Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.

EFAs Cold Pressed

Gluten free

Storage

Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees - 30 degrees C).

General Statements

Formula 389

Made in USA

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take 1 to 3 softgels daily.

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

See for yourself

Black Currant Oil 535 mg by Wonder Laboratories label

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

Black Currant Oil 535 mg 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 Black Currant Oil 535 mg by Wonder Laboratories

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Softgel(s) Dosage formSoftgel Capsule 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.

Black Currant 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...

Black Currant Oil monograph & interactions

Approximate Fatty Acid content

0 NP per serving
  • › Gamma-Linolenic Acid

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

Interaction report

Black Currant Oil 535 mg by Wonder Laboratories Drug Interactions

Want to check YOUR meds against Black Currant Oil 535 mg?

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

Black Currant Oil 140

Individual Drug Interactions

The ingredients in Black Currant Oil 535 mg interact with 140 drugs. Click any drug to see the details.

1 of the 2 ingredients in Black Currant Oil 535 mg interact with drugs. Each result below shows which ingredient is responsible. Black Currant Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Black Currant Oil 535 mg 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.

Black Currant 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
Black Currant Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Black Currant Oil 535 mg, from the product label.

Wonder Laboratories

See all Wonder Laboratories products
Name
Wonder Laboratories
Street Address
115 S.C.T. Ct.
City
White House
State
TN
ZipCode
37188
Pharmacist Counseling Corner

Black Currant Oil 535 mg by Wonder Laboratories: Common Questions

Does Black Currant Oil 535 mg by Wonder Laboratories interact with any medications?
Yes. Based on its ingredients, Black Currant Oil 535 mg 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?
Black Currant Oil 535 mg contains 2 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.
Will this give me diarrhea?
Mild diarrhea was rare in the trials we have data for — only 8 people out of over 2,100 reported it, and it showed up 2 to 10 days after they started. Most people tolerated it fine, especially at the lower dose in this product.
Can I take this if I'm pregnant or breastfeeding?
There isn't enough safety data on black currant oil supplements during pregnancy or breastfeeding to know either way. Talk with your doctor or pharmacist about whether it's right for you right now.
Does black currant oil actually work for anything?
The evidence we hold rates it as insufficient for Alzheimer disease, liver disease, upper respiratory infections, cough, and eczema. That means the studies aren't strong enough yet to say whether it helps or not — not that it definitely doesn't.
What's gamma-linolenic acid, and why is it in here?
Gamma-linolenic acid (GLA) is a fatty acid found naturally in black currant seeds. Your body can use it, but we don't have enough data to say whether the amount in this supplement makes a real difference for your health.
Is this safe to take long-term?
The berry in food amounts is safe, but concentrated supplements like this haven't been studied as much over time. Check with your doctor before taking it regularly, especially if you have any medical conditions or take medications.

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

Not sure if Black Currant Oil 535 mg 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.

Black Currant Oil 535 mg label
Go deeper

The Full Monographs Behind Black Currant Oil 535 mg’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

Black Currant Oil 535 mg'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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