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

Black Currant Ingredients & Drug Interactions

by NusaPure

Black Currant label
See full label image
Capsule Category: Botanical
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 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 NusaPure 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 Fruit Extract. 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 by NusaPure

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

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HelloPharmacist Scorecard of Black Currant by NusaPure

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

This product contains one active ingredient: black currant fruit extract. Black currant is a berry that's been studied for various health purposes, though evidence remains limited for most of them.

The capsule also holds inactive ingredients — cellulose, silica, magnesium stearate, and rice flour — which serve as fillers and binders to hold the supplement 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 we hold on black currant doesn't establish that it works for the conditions it's marketed for — including Alzheimer disease, liver disease, upper respiratory infections, cough, and atopic dermatitis (eczema). All of these carry a rating of insufficient reliable evidence, meaning the research isn't robust enough yet to say whether it helps or doesn't.

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.

Black currant berries are safe in the amounts you'd eat as food, but concentrated supplements like this one are much less studied. The safety data we have is limited, so caution is warranted.

In one trial of 2,154 people taking black currant seed oil, a small number reported mild diarrhea 2 to 10 days after they started — it resolved on its own. Pregnancy and lactation safety data isn't on file for this product; talk with your doctor or pharmacist about whether it's right for you if you're pregnant or breastfeeding.

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 against blood thinners and antiplatelet drugs (warfarin, clopidogrel, aspirin, and similar) and antipsychotic phenothiazines before starting. Altogether, these interactions span 140 individual medications.

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.

If you take blood thinners, antiplatelet drugs, or antipsychotic medications, check with your pharmacist before starting this product. The evidence for black currant's benefits is thin across the board right now.

It's generally well tolerated, but concentrated supplements deserve more caution than eating the berry itself.

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 23, 2024.

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 NusaPure
Barcode (UPC) X001HAV6YR
Net contents 200 Veg Cap(s)
Market status On market
Date entered into DSLD May 23, 2024
DSLD ID 307284
Product type Botanical
Supplement form Capsule
Dietary claims / uses 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 Black Currant by NusaPure, 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 Veg Capsule(s)
Maximum serving Sizes:
1 Veg Capsule(s)
Servings per container
200
UPC/BARCODE
X001HAV6YR
IngredientAmount% DV
Black Currant Fruit Extract250 mg--

Other ingredients: Cellulose, Silica, Magnesium Stearate, Rice Flour

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

Black currant extract 250 mg 10:1 extract

Black Currant 2500 mg equivalent per capsule

General Statements

New

Suggested/Recommended/Usage/Directions

Directions: For adults, take one (1) capsule daily preferably with a meal.

Precautions

Warning: If you are pregnant, nursing or taking any medications, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18.

Keep out of reach of children.

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

Formulation

Natural color variation may occur in this product.

Assembled in USA Tested Supports normal nutritional supplementation Guaranteed quality, laboratory tested Made under strict GMP guidelines Max strength

Suitable for vegetarians/vegans

Allergen information: Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, shellfish or tree nut ingredients. GMO free Made with Non-GMO ingredients

Storage

Store in cool dry place. Avoid excessive heat or moisture.

FDA Disclaimer Statement

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

Seals/Symbols

Premium Quality - Assembled in USA GMO free Made with Non-GMO ingredients Gluten free FDA Registered Facility

Manufactured in a cGMP inspected facility

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

Black Currant by NusaPure 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 NusaPure

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

Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container200 Amounts shown are per serving.

Black Currant Fruit Extract

Interacts with
140 drugs
250 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 Fruit Extract monograph & interactions

Other (inactive) ingredients: Cellulose, Silica, Magnesium Stearate, Rice Flour. These complete the product’s ingredient list but are not active constituents.

Interaction report

Black Currant by NusaPure 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 Fruit Extract 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 Fruit Extract

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 Currant Fruit Extract2 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 Fruit Extract full monograph & interactions
The maker

Brand information

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

NusaPure

See all NusaPure products
Name
Gmax Central, LLC
Street Address
500 Westover Dr. #92909
City
Sanford
State
NC
ZipCode
27330
Pharmacist Counseling Corner

Black Currant by NusaPure: Common Questions

Does Black Currant by NusaPure 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.
Does black currant actually work for anything?
According to the data we hold, we don't have enough reliable evidence yet to say black currant works for Alzheimer disease, liver disease, cough, upper respiratory infections, or eczema. The research just isn't there yet.
What side effects should I expect?
In the largest trial we have data for, mild diarrhea was the only side effect reported — and it happened in only a very small number of people (8 out of 2,154) a few days after starting. Most people had no issues at all.
Is it safe to take if I'm pregnant or breastfeeding?
We don't have safety data on concentrated black currant supplements during pregnancy or breastfeeding. Talk with your doctor or pharmacist about what's right for your situation.
Is black currant the same as eating the berry?
No — the berry itself in food amounts is considered safe, but this is a concentrated supplement extract, which is much less studied. That's why caution is important.

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

Not sure if Black Currant 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 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

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