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Dietary supplement

Blackcurrant Powder Ingredients & Drug Interactions

by BulkSupplements.com

Blackcurrant Powder label
See full label image
Powder Category: Botanical
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 Blackcurrant Powder 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 Powder is a dietary supplement by BulkSupplements.com 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 powder. 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 Powder by BulkSupplements.com

Ask about any prescription or over-the-counter medication and we check it for interactions with Blackcurrant Powder by BulkSupplements.com — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Blackcurrant Powder by BulkSupplements.com

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 product contains one active ingredient: blackcurrant powder. Blackcurrant is a berry that's been used in traditional medicine and studied for potential effects on conditions like upper respiratory infection, cough, and skin health, though the evidence remains incomplete.

There are no inactive ingredients listed for this product.

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 on blackcurrant powder isn't established in our data. The ingredient has been studied for Alzheimer disease, liver disease, upper respiratory tract infection, cough, and atopic dermatitis (eczema), but all carry a rating of insufficient reliable evidence.

That means we don't yet have enough solid research to say whether it works for any of these purposes.

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 as a food is well tolerated, but this product is a concentrated supplement — a different story. The safety data on concentrated blackcurrant supplements is limited, so caution is advised.

One trial of blackcurrant seed oil at a higher dose reported mild diarrhea in a small number of participants, appearing 2 to 10 days after starting. Pregnancy and lactation safety information isn't on file for this ingredient, so talk with your doctor or pharmacist before using it if you're pregnant, nursing, or planning to be.

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 taking blackcurrant powder, double-check with your doctor or pharmacist if you're on blood thinners or antiplatelet drugs (such as warfarin or aspirin) — GLA in blackcurrant may raise bleeding risk. Also flag phenothiazine antipsychotics, where there's a theoretical concern about 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.

Blackcurrant powder might interest you if you're curious about traditional berry supplements, but the evidence for its effectiveness isn't clear yet. If you take blood thinners, antiplatelet drugs, or antipsychotics, you'll want to clear this with your doctor or pharmacist first because of potential interaction concerns.

Check your medications before starting, and know that concentrated supplements like this haven't been studied as thoroughly as the berry itself in food.

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 Apr 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 Blackcurrant Powder, straight from the product label.

Brand BulkSupplements.com
Barcode (UPC) X002KUD6HN
Net contents 3.5 Ounce(s); 100 Gram(s)
Market status On market
Date entered into DSLD Apr 23, 2024
DSLD ID 310711
Product type Botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) 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 Blackcurrant Powder by BulkSupplements.com, 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:
5 Gram(s)
Maximum serving Sizes:
5 Gram(s)
Servings per container
20
UPC/BARCODE
X002KUD6HN
IngredientAmount% DV
Blackcurrant powder5 Gram(s)--

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.
Brand IP Statement(s)

BulkSupplements.com Clean & pure bulk supplements

Formulation

Free of: Added sugar, soy, dairy, yeast, gluten, additives

Color may vary

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take 5 grams (about 2 tsp) once or twice daily, or as directed by a physician.

General Statements

Use an accurate milligram scale.

New

Storage

Contents are sold by weight, not volume. Settling may occur. Store in a dry, cool place

FDA Disclaimer Statement

Warning: This product is not intended to diagnose, treat, cure, or prevent any disease.

Precautions

Always consult a physician before taking any dietary supplement.

Keep out of reach of children.

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

See for yourself

Blackcurrant Powder by BulkSupplements.com label

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

Blackcurrant Powder 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 Powder by BulkSupplements.com

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

Serving size5 Gram(s) Dosage formPowder Servings per container20 Amounts shown are per serving.

Blackcurrant powder

Interacts with
140 drugs
5 Gram(s) 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 powder monograph & interactions
Interaction report

Blackcurrant Powder by BulkSupplements.com Drug Interactions

Want to check YOUR meds against Blackcurrant Powder?

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 powder 140

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Blackcurrant Powder 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 powder2 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 powder full monograph & interactions
The maker

Brand information

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

BulkSupplements.com

See all BulkSupplements.com products
Name
BulkSupplements.com
Street Address
7511 Eastgate Rd
City
Henderson
State
NV
ZipCode
89011
Web Address
BulkSupplements.com
Pharmacist Counseling Corner

Blackcurrant Powder by BulkSupplements.com: Common Questions

Does Blackcurrant Powder by BulkSupplements.com interact with any medications?
Yes. Based on its ingredients, Blackcurrant Powder 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 Powder 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 a blood thinner like warfarin or aspirin?
Not without checking first. Blackcurrant seed oil contains a compound called GLA that may increase bleeding risk when combined with blood thinners or antiplatelet drugs. Talk with your doctor or pharmacist before adding this to your routine.
Does blackcurrant powder actually help with colds or cough?
The evidence isn't clear enough to say. Studies have looked at blackcurrant for upper respiratory infection and cough, but we don't have reliable proof it works for either one.
What side effects should I watch for?
Mild diarrhea is the only adverse effect reported in research, appearing a few days after starting. Because concentrated supplements haven't been studied as much as the berry itself in food, use caution and let your doctor know if you develop any unexpected symptoms.
Is blackcurrant powder safe if I'm pregnant or breastfeeding?
There isn't enough data on concentrated supplements to know either way. Talk with your doctor or pharmacist before using it if you're pregnant, nursing, or planning to be.
What's the difference between eating blackcurrants and taking this supplement?
The berry itself in normal food amounts is well tolerated, but this is a concentrated supplement — a much higher dose — and concentrated blackcurrant supplements haven't been studied as carefully. Use caution and check with your doctor first.

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

Not sure if Blackcurrant Powder 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 Powder label
Go deeper

The Full Monographs Behind Blackcurrant Powder’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 Powder'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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