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Dietary supplement

Phyto-Gen Black Currant Bud Ingredients & Drug Interactions

by Genestra Brands

Phyto-Gen Black Currant Bud label
See full label image
Liquid 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 Phyto-Gen Black Currant Bud 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

Phyto-Gen Black Currant Bud is a dietary supplement by Genestra Brands 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 Phyto-Gen Black Currant Bud by Genestra Brands

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

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HelloPharmacist Scorecard of Phyto-Gen Black Currant Bud by Genestra Brands

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 3, 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 a single active ingredient: black currant (Ribes nigrum) bud extract, a plant-based concentrate from the buds of the black currant plant. The formula also includes purified water, ethanol, and glycerin as inactive ingredients that help deliver and preserve 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 evidence for black currant bud extract is not yet established. The data we hold shows insufficient reliable evidence to rate it for Alzheimer disease, liver disease, common cold, cough, and atopic dermatitis (eczema).

That doesn't mean it doesn't work — it means rigorous studies haven't yet proven an effect for these uses.

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 itself is safe as a food, but concentrated supplements like this one are much less studied and deserve caution. Supplements lack the safety data we have for whole berries, so talk with your doctor before starting, especially if you have any health conditions.

In a trial of over 2,000 people taking black currant seed oil at a higher dose for 6 weeks, a small number reported mild diarrhea a few days after beginning — most side effects resolved on their own. Pregnancy and lactation safety data is not on file for this ingredient, so speak with your doctor or pharmacist for personalized advice if you are pregnant, planning to become 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.

Before taking Phyto-Gen Black Currant Bud, double-check with your doctor or pharmacist if you are on any anticoagulant or antiplatelet drugs (blood thinners or anti-clotting medications like warfarin or aspirin) — there is a moderate risk of increased bleeding. Also confirm if you take any phenothiazines (antipsychotic medications) — there is a moderate theoretical concern about seizure threshold, though clinical evidence is lacking.

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 is not established to work for the conditions studied so far, and concentrated supplements are less researched than the whole berry. The main concern is interaction with blood thinners and antipsychotic medications.

If you take any prescription drugs, especially those for blood clotting or mental health, check with your doctor or pharmacist before adding this product.

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 Jul 23, 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 Phyto-Gen Black Currant Bud, straight from the product label.

Brand Genestra Brands
Barcode (UPC) 883196117710
Net contents 0.5 fl. Oz.; 15 mL
Market status On market
Date entered into DSLD Jul 23, 2020
DSLD ID 231091
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
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 Phyto-Gen Black Currant Bud by Genestra Brands, 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:
0.28 mL
Maximum serving Sizes:
0.28 mL
Servings per container
53
UPC/BARCODE
883196117710
IngredientAmount% DV
Black Currant (Ribes nigrum) bud extract0.28 mL--

Other ingredients: purified Water, Ethanol, 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.
Suggested/Recommended/Usage/Directions

Recommended Dose: Take 10 drops once daily or as recommended by your health professional. Invert bottle to 45 degrees and shake lightly allowing drops to fall directly into mouth or in 1/4 oz of water.

Precautions

Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.

Keep out of the reach of children.

This product was sealed for your protection. Do not use if box or contents are open or damaged.

Use only if safety seal is intact.

Storage

Store in a cool, dry place.

FDA Statement of Identity

Dietary Supplement

General Statements

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity. Scan to learn about our quality excellence

For warnings and additional information, see outer box.

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

See for yourself

Phyto-Gen Black Currant Bud by Genestra Brands label

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

Phyto-Gen Black Currant Bud 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 Phyto-Gen Black Currant Bud by Genestra Brands

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

Serving size0.28 mL Dosage formLiquid Servings per container53 Amounts shown are per serving.

Black Currant (Ribes nigrum) bud extract

Interacts with
140 drugs
0.28 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: Purified Water, Ethanol, Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Phyto-Gen Black Currant Bud by Genestra Brands Drug Interactions

Want to check YOUR meds against Phyto-Gen Black Currant Bud?

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 Phyto-Gen Black Currant Bud interact with 140 drugs. Click any drug to see the details.

1 of the 1 ingredient in Phyto-Gen Black Currant Bud 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 Phyto-Gen Black Currant Bud 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 Phyto-Gen Black Currant Bud, from the product label.

Genestra Brands

Name
Seroyal USA
City
Pittsburgh
State
PA
ZipCode
15275
Phone Number
1-888-737-6925
Web Address
seroyal.com
Pharmacist Counseling Corner

Phyto-Gen Black Currant Bud by Genestra Brands: Common Questions

Does Phyto-Gen Black Currant Bud by Genestra Brands interact with any medications?
Yes. Based on its ingredients, Phyto-Gen Black Currant Bud 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?
Phyto-Gen Black Currant Bud 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. Black currant contains gamma-linolenic acid (GLA), which may increase bleeding risk when combined with blood thinners. Talk to your doctor or pharmacist before starting — they can decide if it's safe for you or if you need to avoid it.
What side effects might I experience?
In a large trial, a small number of people reported mild diarrhea a few days after starting black currant seed oil at a higher dose. Most cases were mild and resolved on their own. Beyond that, concentrated supplement safety data is limited, so use caution and report any new symptoms to your doctor.
Does this actually work for colds, cough, or eczema?
The evidence isn't there yet. We don't have reliable studies proving black currant bud extract works for those conditions, so we can't say whether it does or doesn't. You may want to talk with your doctor about proven options instead.
Is it safe to use if I'm pregnant or breastfeeding?
We don't have safety data on concentrated black currant supplements during pregnancy or lactation. Talk with your doctor or pharmacist — they can weigh the risks and benefits for your individual situation and help you decide what's right for you.
What is black currant bud extract, and why use the bud instead of the berry?
Black currant bud extract is a concentrated form made from the buds of the black currant plant, which may contain different compounds than the whole berry. The bud is traditionally used in herbal medicine, though the concentrated supplement form is much less studied than eating the berry as food.

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.

Phyto-Gen Black Currant Bud label
Go deeper

The Full Monographs Behind Phyto-Gen Black Currant Bud’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

Phyto-Gen Black Currant Bud'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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