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Dietary supplement

Ribes Nigrum Ingredients & Drug Interactions

by UNDA Gemmo

Ribes Nigrum label
See full label image
Liquid 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 Ribes Nigrum 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

Ribes Nigrum is a dietary supplement by UNDA Gemmo 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 (Ribes nigrum) bud 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 Ribes Nigrum by UNDA Gemmo

Ask about any prescription or over-the-counter medication and we check it for interactions with Ribes Nigrum by UNDA Gemmo — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Ribes Nigrum by UNDA Gemmo

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 Sep 10, 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 (Ribes nigrum) bud extract in liquid form. Black currant buds are used in herbal and traditional medicine, though the evidence for their effectiveness in humans is limited.

The liquid also includes glycerin, ethanol, and purified water as inactive ingredients to deliver the extract.

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 data we hold shows insufficient reliable evidence to rate black currant for any of the conditions listed—including Alzheimer disease, liver disease, common cold, cough, and atopic dermatitis (eczema). That means there's not enough solid research yet to say whether it works for these uses.

If you're considering it for a specific health goal, talk with your doctor or pharmacist about whether the evidence supports it.

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 generally well tolerated, but concentrated supplements like this one are less studied and should be used cautiously. The safety data on supplements is limited, so check with your doctor first if you're considering regular use.

In one trial of black currant seed oil at 1.8 grams twice daily for 6 weeks, a small number of participants reported mild diarrhea 2 to 10 days after starting the supplement. There is not enough information on file regarding use during pregnancy and lactation—talk with your doctor or pharmacist for personalized advice if you're pregnant, breastfeeding, or planning to become pregnant.

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 this product, double-check with your doctor or pharmacist if you're on blood thinners (anticoagulants or antiplatelet drugs) or antipsychotic medications (phenothiazines). Black currant seed oil may increase bleeding risk with the first group and theoretically lower seizure threshold with the second, both Moderate-severity concerns.

Your pharmacist can search your exact medications below to see if any overlap.

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 bud extract may be worth considering if you're exploring traditional herbal options, but the evidence for specific health claims is thin. The main caution is if you take blood thinners or antipsychotic medications—those warrant a conversation with your doctor or pharmacist before you add this to your routine.

Concentrated supplements are less studied than whole berries, so it's wise to confirm safety with your own healthcare provider first.

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 22, 2021.

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 Ribes Nigrum, straight from the product label.

Brand UNDA Gemmo
Barcode (UPC) 88319631100
Net contents 4.2 Fluid Ounce(s); 125 Milliliter(s)
Market status On market
Date entered into DSLD Apr 22, 2021
DSLD ID 244860
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Children 4 or More Years of Age, Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Ribes Nigrum by UNDA Gemmo, 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:
1.25 mL
Maximum serving Sizes:
1.25 mL
Servings per container
100
UPC/BARCODE
88319631100
IngredientAmount% DV
Black Currant (Ribes nigrum) bud extract1.25 mL--

Other ingredients: Glycerin, Ethanol, purified 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

Recommended Dose: Adults and Children (over 12 years): Take 50 drops (1.25 mL) three times daily in a small amount of water or as recommended by your healthcare practitioner.

Precautions

Risk Information: If you are pregnant or breastfeeding, do not use, unless directed by your healthcare practitioner.

Formulation

Gemmae Bud

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

Ribes Nigrum by UNDA Gemmo label

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

Ribes Nigrum 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 Ribes Nigrum by UNDA Gemmo

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

Serving size1.25 mL Dosage formLiquid Servings per container100 Amounts shown are per serving.

Black Currant (Ribes nigrum) bud extract

Interacts with
140 drugs
1.25 mL 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 (Ribes nigrum) bud extract monograph & interactions

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

Interaction report

Ribes Nigrum by UNDA Gemmo Drug Interactions

Want to check YOUR meds against Ribes Nigrum?

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 (Ribes nigrum) bud extract 140

Individual Drug Interactions

The ingredients in Ribes Nigrum interact with 140 drugs. Click any drug to see the details.

1 of the 1 ingredient in Ribes Nigrum interact with drugs. Each result below shows which ingredient is responsible. Black Currant (Ribes nigrum) bud extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Ribes Nigrum 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 (Ribes nigrum) bud 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 (Ribes nigrum) bud extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Ribes Nigrum, from the product label.

UNDA Gemmo

See all UNDA Gemmo products
Name
Seroyal USA
City
Pittsburg
State
PA
ZipCode
15275
Phone Number
1-888-737-6925
Pharmacist Counseling Corner

Ribes Nigrum by UNDA Gemmo: Common Questions

Does Ribes Nigrum by UNDA Gemmo interact with any medications?
Yes. Based on its ingredients, Ribes Nigrum 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?
Ribes Nigrum 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.
What is black currant bud extract and why is it in this product?
Black currant bud extract comes from the buds of the black currant plant and is used in traditional herbal medicine. This product delivers that extract in liquid form, though research on what it actually does in the body is still limited.
Is this safe to take long-term?
Concentrated supplements of black currant aren't as well studied as the whole berry eaten as food. The safety data is limited, so check with your doctor first, especially if you plan to take it regularly.
Does black currant actually work for colds, cough, or skin conditions?
The data we hold shows insufficient evidence to say whether it works for these uses. That doesn't mean it can't help—it just means there isn't enough solid research yet to make a confident claim.
What side effects might I experience?
In one study, a small number of people taking black currant seed oil reported mild diarrhea, usually within 2 to 10 days of starting. That's the main adverse effect documented in the data we hold.
Can I take this while pregnant or breastfeeding?
There isn't enough information on file about black currant supplements during pregnancy and lactation. Talk with your doctor or pharmacist about whether it's right for your situation.
What's the difference between black currant berry in food and this supplement?
The berry in food amounts is likely safe, but this product is a concentrated supplement and hasn't been studied as thoroughly. That's why it makes sense to get your doctor's okay before starting, especially if you take other medications.

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

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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.

Ribes Nigrum label
Go deeper

The Full Monographs Behind Ribes Nigrum’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

Ribes Nigrum'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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