Interactions on record — worth a quick check against your medications. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Phyto-Gen Ocu-gen Ingredients & Drug Interactions

by Genestra Brands

Phyto-Gen Ocu-gen label
See full label image
Liquid 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 Phyto-Gen Ocu-gen 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 Ocu-gen is a dietary supplement by Genestra Brands with 3 active ingredients. Its ingredients are commonly taken for eye and vision health, antioxidant support, diarrhea and digestive upset.Based on those ingredients, 442 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Sea Buckthorn (Hippophae rhamnoides) bud extract, Bilberry (Vaccinium myrtillus) young shoot 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 Ocu-gen by Genestra Brands

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

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HelloPharmacist Scorecard of Phyto-Gen Ocu-gen 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 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Phyto-Gen Ocu-gen is a liquid formula with 3 active ingredients: bilberry young shoot extract, sea buckthorn bud extract, and Judas Tree bud extract. The product also contains inactive ingredients — water, purified ethanol (a preservative), and glycerin.

Bilberry and sea buckthorn are plant extracts traditionally used for eye and skin health, while Judas Tree is a lesser-known botanical we have no specific safety or interaction data for.

Does it work?

Leans against
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
Leans against

The strongest graded evidence we hold for the stated purpose leans against a benefit.

Why this rating?
  • The label markets this product for: Eye and vision health.
  • We looked for evidence on: Age-related macular degeneration (AMD), Asthenopia (eye strain), Cataracts, Diabetic retinopathy, Dry eye, Glaucoma — and 4 related terms.
  • The closest evidence on file: Bilberry is rated "Possibly Ineffective" for Night vision (Natural Medicines).
  • Also on file: Bilberry is rated "Insufficient Reliable Evidence To Rate" for Age-related macular degeneration (AMD), Cataracts, Diabetic retinopathy, Dry eye, and more.

The evidence for these ingredients is mixed. Bilberry is rated possibly ineffective for night vision — the main reason people buy it — and the data we hold is insufficient to rate it for age-related macular degeneration, cognitive decline, or other conditions often listed on eye supplements.

Sea buckthorn is rated possibly effective for burns and possibly ineffective for eczema; evidence for its effects on skin aging and cholesterol is insufficient. We have no effectiveness data on file for Judas Tree extract.

The evidence, ingredient by ingredient Bilberry Sea Buckthorn

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Bilberry fruit is generally well tolerated as a food, but long-term safety data for supplement doses are limited, and concentrated supplements are not well studied. The most common side effects are dark-colored or greenish stools, flatulence, and mild stomach upset — these are harmless but noticeable.

Sea buckthorn is also generally well tolerated at food doses, though supplement safety hasn't been fully studied; at high doses (much higher than typical supplements), it can cause yellow staining of the skin. Bilberry is rated likely safe in pregnancy and lactation.

Sea buckthorn's safety in pregnancy and lactation hasn't been formally rated; talk with your doctor or pharmacist about use during these times.

Side effects, ingredient by ingredient Bilberry Sea Buckthorn

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?
  • 2 of the 2 matched ingredients can interact with medications — Bilberry, Sea Buckthorn.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 442 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 Ocu-gen, check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (like warfarin or aspirin) — both bilberry and sea buckthorn may increase bleeding risk. If you're on diabetes medications, bilberry may lower your blood sugar further.

If you take blood pressure medications, sea buckthorn could lower your pressure more than intended. Also flag erlotinib (a cancer drug) if you're taking it.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with graded evidence leaning against its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Phyto-Gen Ocu-gen may appeal to you if you're looking for a traditional eye-support supplement, but the evidence that bilberry actually improves night vision or macular health is weak. More importantly, if you take blood thinners, diabetes medications, or blood pressure drugs, you need to check with your doctor or pharmacist before adding this product — the interactions could matter.

Talk it over with your own healthcare provider.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 19, 2022.

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 Ocu-gen, straight from the product label.

Brand Genestra Brands
Barcode (UPC) 883196117314
Net contents 0.5 Fluid Ounce(s); 15 mL
Market status On market
Date entered into DSLD May 19, 2022
DSLD ID 264432
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 Ocu-gen 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
883196117314
IngredientAmount% DV
Bilberry (Vaccinium myrtillus) young shoot extract0.09 mL--
Sea Buckthorn (Hippophae rhamnoides) bud extract0.09 mL--
Judas Tree (Cercis siliquastrum) bud extract0.09 mL--

Other ingredients: Water, Purified, 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

For warnings and additional information, see outer box.

Keep out of the reach of children.

Use only if safety seal is intact.

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

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

Storage

Store in a cool, dry place.

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 V2 931-15U

FDA Statement of Identity

Dietary Supplement

Formula

Bilberry Sea Buckthorn Judas Tree

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

See for yourself

Phyto-Gen Ocu-gen by Genestra Brands label

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

Phyto-Gen Ocu-gen 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 Ocu-gen by Genestra Brands

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

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

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Bilberry (Vaccinium myrtillus) young shoot extract

Interacts with
275 drugs
0.09 mL per serving

Bilberry is a blueberry-like fruit rich in antioxidant plant compounds called anthocyanins, and it has a long history of traditional use for eye healt...

Bilberry (Vaccinium myrtillus) young shoot extract monograph & interactions

Sea Buckthorn (Hippophae rhamnoides) bud extract

Interacts with
289 drugs
0.09 mL per serving

Sea buckthorn is a berry-bearing shrub rich in vitamins, carotenoids, and fatty acids that people use for skin, eye, digestive, and heart health. Earl...

Sea Buckthorn (Hippophae rhamnoides) bud extract monograph & interactions

Judas Tree (Cercis siliquastrum) bud extract

0.09 mL per serving

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

Interaction report

Phyto-Gen Ocu-gen by Genestra Brands Drug Interactions

Want to check YOUR meds against Phyto-Gen Ocu-gen?

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
442Drugs
442 Moderate

Ingredients driving the most interactions

Sea Buckthorn (Hippophae rhamnoides) bud extract 289
Bilberry (Vaccinium myrtillus) young shoot extract 275

Individual Drug Interactions

The ingredients in Phyto-Gen Ocu-gen interact with 442 drugs. Click any drug to see the details.

2 of the 3 ingredients in Phyto-Gen Ocu-gen interact with drugs. Each result below shows which ingredient is responsible. Sea Buckthorn (Hippophae rhamnoides) bud extract Bilberry (Vaccinium myrtillus) young shoot extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Phyto-Gen Ocu-gen with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Sea Buckthorn (Hippophae rhamnoides) bud extract2 drug types · 289 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, sea buckthorn may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Clinical research suggests that sea buckthorn fruit extracts can inhibit platelet aggregation and adhesion to collagen and fibrinogen.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, taking sea buckthorn with antihypertensive drugs might increase the risk of hypotension.
Taking sea buckthorn appears to reduce blood pressure in some patients.

Likelihood Possible Evidence D
Sea Buckthorn (Hippophae rhamnoides) bud extract full monograph & interactions

Bilberry (Vaccinium myrtillus) young shoot extract4 drug types · 275 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, bilberry fruit extract might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro, animal, and clinical research suggest that anthocyanidin extracts from bilberry can inhibit platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, bilberry leaf or fruit extract may increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that bilberry leaf extract might have blood glucose-lowering activity. Also, one small clinical trial in patients with type 2 diabetes shows that taking bilberry fruit extract 470 mg as a single dose prior to an oral glucose tolerance test lowers plasma glucose levels when compared with placebo.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Theoretically, bilberry fruit extract might decrease levels of drugs metabolized by CYP2E1.
Animal research shows that exposure to small concentrations of bilberry extract in drinking water for around one month increased CYP2E1 activity by 31%. However, exposure over a 2-month period did not increase CYP2E1 activity. This effect has not been reported in humans.

Likelihood Possible Evidence D
Erlotinib (Tarceva)

Theoretically, bilberry fruit extract might reduce the efficacy of erlotinib.
In vitro research suggests that bilberry fruit extract and its constituents, delphinidin and delphinidin-3-O-glucoside, inhibit the activity of erlotinib. This interaction has not been reported in humans.

Likelihood Possible Evidence D
Bilberry (Vaccinium myrtillus) young shoot extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Phyto-Gen Ocu-gen, 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 Ocu-gen by Genestra Brands: Common Questions

Does Phyto-Gen Ocu-gen by Genestra Brands interact with any medications?
Yes. Based on its ingredients, Phyto-Gen Ocu-gen has a known interaction with 442 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Phyto-Gen Ocu-gen contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 this actually help with night vision?
Bilberry is rated possibly ineffective for night vision in our data, so the evidence doesn't support that claim. While bilberry is popular in eye supplements, the research doesn't back up the hype for this particular use.
Is it safe to take if I'm pregnant or breastfeeding?
Bilberry is rated likely safe during pregnancy and lactation. Sea buckthorn's safety during these times hasn't been formally rated in our data, so talk with your doctor or pharmacist about whether it's right for you.
What are the side effects?
The most common ones are dark or greenish stools, gas, and mild stomach upset — all harmless but worth knowing about. At very high doses, sea buckthorn can cause yellow staining of the skin, though that's unlikely at typical supplement doses.
What is sea buckthorn supposed to do?
Sea buckthorn is rated possibly effective for burns and possibly ineffective for eczema. The evidence for skin aging and cholesterol effects is insufficient in our data.
Why can't you check Judas Tree for drug interactions?
We don't hold safety or interaction data for Judas Tree bud extract, so we can't tell you whether it affects medications. That's one reason to discuss this product with your pharmacist before starting it.

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 Ocu-gen label
Go deeper

The Full Monographs Behind Phyto-Gen Ocu-gen’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Bilberry

Interacts with 275 drugs

Bilberry is a blueberry-like fruit rich in antioxidant plant compounds called anthocyanins, and it has a long history of traditional use for eye health, circulation, and mild diarrhea. While...

Read the full Bilberry monograph → Herb & supplement monograph

Sea Buckthorn

Interacts with 289 drugs

Sea buckthorn is a berry-bearing shrub rich in vitamins, carotenoids, and fatty acids that people use for skin, eye, digestive, and heart health. Early research is promising for a few uses l...

Read the full Sea Buckthorn monograph →
Sources

Sources & How We Checked

Phyto-Gen Ocu-gen'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 21 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.

Bilberry 14 references
  1. Cignarella A, Nastasi M, Cavalli E, Puglisi L. Novel lipid-lowering properties of Vaccinium myrtillus L. leaves, a traditional antidiabetic treatment, in several models of rat dyslipidaemia: a comparison with ciprofibrate. Thromb Res 1996;84:311-22. PubMed
  2. Morazzoni P, Magistretti MJ. Activity of Myrtocyan, an anthosyanoside complex from Vaccinium myrtillus (VMA), on platelet aggregation and adhesiveness. Fitoterapia 1990;61:13-21.
  3. Erlund, I., Koli, R., Alfthan, G., Marniemi, J., Puukka, P., Mustonen, P., Mattila, P., and Jula, A. Favorable effects of berry consumption on platelet function, blood pressure, and HDL cholesterol. Am J Clin Nutr 2008;87(2):323-331. PubMed
  4. Hawrelak, J. A. and Myers, S. P. Effects of two natural medicine formulations on irritable bowel syndrome symptoms: a pilot study. J Altern Complement Med 2010;16(10):1065-1071. PubMed
  5. Morazzoni P and Magistretti MJ. Effects of Vaccinium myrtillus anthocyanosides on prostacyclin-like activity in rat arterial issue. Fitoterapia 1986;57:11-14.
  6. Pulliero G, Montin S, Bettini V, and et al. Ex vivo study of the inhibitory effects of Vaccinium myrtillus anthocyanosides on human platelet aggregation. Fitoterapia 1989;60:69-75.
  7. Bottecchia D. Preliminary report on the inhibitory effect of vaccinium myrtillus anthocyanosides on platelet aggregation and clot retraction. Fitoterapia 1987;48:3-8.
  8. Fdez, M., Zaragoza, F., and Alvarez, P. In vitro platelet aggregation effects of anthocyanosides of vaccinium myrtilus L. Anales de la Real Academia de Farmacia 1983;49:79-90.
  9. Biedermann L, Mwinyi J, Scharl M, Frei P, Zeitz J, Kullak-Ublick GA, et al. Bilberry ingestion improves disease activity in mild to moderate ulcerative colitis-an open pilot study. 2013 May;7(4):271-9. PubMed
  10. Hoggard N, Cruickshank M, Moar KM, Bestwick C, Holst J, Russell W, et al. A single supplement of a standardized bilberry (Vaccinium myrtillus L.) extract (36% wet weight anthocyanins) modifies glycaemic response in individuals with type 2 diabetes control
  11. Aichinger G, Pahlke G, Nagel LJ, Berger W, Marko D. Bilberry extract, its major phenolic compounds, and soy isoflavone genistein antagonize the cytostatic drug erlotinib in human epithelial cells. Food Funct 2016;7(8):3628-36.
  12. Prokop J, Lněničková K, Cibicek N, et al. Effect of bilberry extract (Vaccinium myrtillus L.) on drug-metabolizing enzymes in rats. Food Chem Toxicol 2019;129:382-90. PubMed
  13. Chan SW, Chu TTW, Choi SW, Benzie IFF, Tomlinson B. Impact of short-term bilberry supplementation on glycemic control, cardiovascular disease risk factors, and antioxidant status in Chinese patients with type 2 diabetes. Phytother Res 2021. Online ahead o PubMed
  14. Bøhn SK, Myhrstad MCW, Thoresen M, et al. Bilberry/red grape juice decreases plasma biomarkers of inflammation and tissue damage in aged men with subjective memory impairment -a randomized clinical trial. BMC Nutr 2021;7(1):75. PubMed

See these in context on the Bilberry monograph →

Sea Buckthorn 7 references
  1. Johansson AK, Korte H, Yang B, et al. Sea buckthorn berry oil inhibits platelet aggregation. J Nutr Biochem 2000;11:491-5.. PubMed
  2. Grad, S. C., Muresan, I., and Dumitrascu, D. L. Generalized yellow skin caused by high intake of sea buckthorn. Forsch.Komplementmed. 2012;19(3):153-156. PubMed
  3. Vlasov, V. V. [Hippophae oil in the treatment of superficial skin burns]. Vestn.Dermatol Venerol. 1970;44(6):69-72.
  4. Chang BB, Wang F Xu TY Zhang QQ He J Zhang XJ Li J. Total flavones of Hippophae rhamnoides L. for essential hypertension: a systematic review of randomized controlled trials. Chinese Journal of Evidence-Based Medicine. 2009;9(11):1207-1213. DOI
  5. Olas B, Kontek B, Szczesna M, et al. Inhibition of blood platelet adhesion by phenolics rich fraction of Hippophae rhamnoides L. fruits. J Physiol Pharmacol. 2017;68(2):223-9.
  6. Larmo P, Järvinen R, Laihia J, et al. Effects of a sea buckthorn oil spray emulsion on dry eye. Cont Lens Anterior Eye. 2019;42(4):428-433. PubMed
  7. De Seta F, Caruso S, Di Lorenzo G, Romano F, Mirandola M, Nappi RE. Efficacy and safety of a new vaginal gel for the treatment of symptoms associated with vulvovaginal atrophy in postmenopausal women: A double-blind randomized placebo-controlled study. Ma PubMed

See these in context on the Sea Buckthorn 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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