Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Black Currant Ingredients & Drug Interactions

by FLORASUN

Black Currant label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Black Currant 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 is a dietary supplement by FLORASUN 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 Black Currant. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Black Currant by FLORASUN

Ask about any prescription or over-the-counter medication and we check it for interactions with Black Currant by FLORASUN — 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 Black Currant by FLORASUN

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.

FLORASUN Black Currant contains one active ingredient: black currant seed oil. The capsule itself is made with gelatin as an inactive ingredient.

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 isn't established in our data for black currant's use in Alzheimer disease, liver disease, upper respiratory tract infection, cough, or atopic dermatitis (eczema). For all these uses, the research we have is insufficient to rate how well it works.

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 black currant berry is safe in food amounts, but concentrated supplements like this one are less studied. Adverse effects are uncommon—in a trial of over 2,100 people taking 1.8 grams twice daily, only a small number reported mild diarrhea, which appeared 2 to 10 days after starting.

There isn't enough information on file about black currant supplements in pregnancy or while breastfeeding, so talk with your doctor or pharmacist before using it during either time.

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 FLORASUN Black Currant, double-check with your doctor or pharmacist if you're on any blood thinners or antiplatelet drugs (such as warfarin, aspirin, or clopidogrel)—there's a Moderate risk of increased bleeding. Also check if you're taking any phenothiazine antipsychotics or anti-nausea medications, as there's a Moderate theoretical risk to your seizure threshold.

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.

Black Currant may appeal to you if you're interested in the supplement for general wellness, but the research supporting specific health claims isn't strong yet. If you take blood thinners, antiplatelet drugs, or antipsychotics, this product isn't appropriate without checking with your doctor or pharmacist first.

Concentrated supplements of black currant haven't been studied as thoroughly as food amounts, so discuss this with your healthcare provider 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 Jan 25, 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 Black Currant, straight from the product label.

Brand FLORASUN
Barcode (UPC) 061372109135
Net contents 100 Capsule(s); 260 mg
Market status On market
Date entered into DSLD Jan 25, 2013
DSLD ID 17906
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
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 Black Currant by FLORASUN, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
UPC/BARCODE
061372109135
IngredientAmount% DV
Black Currant260 mg--

Other ingredients: Gelatin

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.
Seals/Symbols

DOURCE NATURELLE

PREMIUM QUALITY

Formula

Each gelatin capsule contains 260 mg of Black Currant leaf.

Formulation

NO EXCIPIENT

General Statements

These capsules are prepared from entirely natural source ingredients, without chemical additives.

ZIN: 415654

LOT 80169 FLORASUN

Our scientific personnel ensures the superior quality of this product through rigorous controls during production.

FDA Disclaimer Statement

Statements not evaluated by FDA. Product not intended to diagnose, treat, cure, or prevent any disease.

FDA Statement of Identity

A Dietary Supplement

Precautions

DO NOT USE IF SECURITY SEAL AROUND CAP IS BROKEN.

Suggested/Recommended/Usage/Directions

Direction: 2 capsules with a glass of water, 3 times daily, before meals or according to your health professional recommendations.

General

H1Y 2C3

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

See for yourself

Black Currant by FLORASUN label

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

Black Currant 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 by FLORASUN

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

Serving size2 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Black Currant

Interacts with
140 drugs
260 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 monograph & interactions

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

Interaction report

Black Currant by FLORASUN Drug Interactions

Want to check YOUR meds against Black Currant?

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 140

Individual Drug Interactions

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

1 of the 1 ingredient in Black Currant interact with drugs. Each result below shows which ingredient is responsible. Black Currant

Each ingredient & the kinds of drugs it affects

For each ingredient in Black Currant 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 Currant2 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 full monograph & interactions
The maker

Brand information

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

FLORASUN

See all FLORASUN products
Name
LALCO LABORATORY REG'D.
State
MONTREAL
ZipCode
H1Y 2C3
Pharmacist Counseling Corner

Black Currant by FLORASUN: Common Questions

Does Black Currant by FLORASUN interact with any medications?
Yes. Based on its ingredients, Black Currant 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 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 black currant if I'm on a blood thinner like warfarin?
Not without checking with your doctor first. Black currant seed oil has antiplatelet effects, which means it can thin your blood. Combined with warfarin or similar drugs, that raises your bleeding risk moderately. Your doctor or pharmacist needs to weigh whether this product is safe for you specifically.
What side effects does black currant cause?
Mild diarrhea was the only side effect reported in trials, and it was uncommon—only a few people in over 2,100 reported it, usually within 2 to 10 days of starting. Most people tolerate it well.
Does black currant actually work for cough or respiratory infections?
The research we have is insufficient to say whether it works for those uses. The evidence hasn't been established in our data.
Is it safe to take black currant while pregnant or breastfeeding?
There isn't enough information on file to know either way. Talk with your doctor or pharmacist about whether it's right for you during pregnancy or while breastfeeding.
Is the supplement as safe as eating black currants in food?
The berries in food amounts are considered safe, but concentrated supplements haven't been studied as much. Use caution with the supplement and check with your doctor first, especially if you have other health conditions or take medications.

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

Not sure if Black Currant 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.

Black Currant label
Go deeper

The Full Monographs Behind Black Currant’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'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

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