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Dietary supplement

Eyebright Herb 410 mg Ingredients & Drug Interactions

by NOW

Eyebright Herb 410 mg label
See full label image
Capsule 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 Eyebright Herb 410 mg 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

Eyebright Herb 410 mg is a dietary supplement by NOW with 1 active ingredient. Its ingredients are commonly taken for eye irritation and redness, conjunctivitis (pink eye), eye strain.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Eyebright. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Eyebright Herb 410 mg by NOW

Ask about any prescription or over-the-counter medication and we check it for interactions with Eyebright Herb 410 mg by NOW — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Eyebright Herb 410 mg by NOW

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 30, 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: eyebright herb at 410 mg per capsule. It's supplied as a capsule with cellulose and stearic acid as inactive ingredients (binding and filling materials).

Does it work?

Not established
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 established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Eyebright's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: eye health and irritation support.
  • We looked for evidence on: Asthenopia (eye strain), Conjunctivitis, eye redness, ocular irritation.
  • The closest evidence on file: Eyebright is rated "Insufficient Reliable Evidence To Rate" for Asthenopia (eye strain) (Natural Medicines).
  • Also on file: Eyebright is rated "Insufficient Reliable Evidence To Rate" for Conjunctivitis.

The evidence for eyebright isn't established in our data. We hold ratings of insufficient reliable evidence for allergic rhinitis (hay fever), cancer, common cold, cough, pharyngitis, and rhinosinusitis — meaning we don't have enough trustworthy studies to say whether it works for these uses or not.

The evidence, ingredient by ingredient Eyebright

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.

Taken by mouth, eyebright is likely safe in small amounts as a tea, but the safety data advises against using homemade or non-sterile preparations directly in the eye. The data advises against eyebright during pregnancy and while breastfeeding because there isn't enough safety information for either.

Some people have reported confusion, headache, nausea, constipation, cough, shortness of breath, and nasal congestion when taking it by mouth — though these are not common.

Side effects, ingredient by ingredient Eyebright

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 — Eyebright.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 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.

If you take antidiabetes drugs (blood sugar medications like insulin or metformin), check your exact medications with the search tool on this page — eyebright may increase the risk of low blood sugar.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Eyebright may appeal to someone looking for herbal respiratory or eye support, but the evidence for its effectiveness isn't established yet. If you take antidiabetes medications, check your exact drugs before starting.

Avoid it if you're pregnant or breastfeeding. Talk with your doctor or pharmacist about whether this supplement makes sense for you.

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 Mar 24, 2016.

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 Eyebright Herb 410 mg, straight from the product label.

Brand NOW
Barcode (UPC) 733739046680
Net contents 100 Veg Capsule(s)
Market status On market
Date entered into DSLD Mar 24, 2016
DSLD ID 58200
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
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 Eyebright Herb 410 mg by NOW, 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:
2 Veg Capsule(s)
Maximum serving Sizes:
2 Veg Capsule(s)
Servings per container
50
UPC/BARCODE
733739046680
IngredientAmount% DV
Total Carbohydrates1 Gram(s)1%
Eyebright820 mg--

Other ingredients: Cellulose, Stearic Acid

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.
Seals/Symbols

GMP QUALITY ASSURED

Non-GMO

Suggested/Recommended/Usage/Directions

Suggested Usage: Take 2 capsules daily.

Formulation

Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Vegetarian/Vegan

Precautions

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

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

General Statements

Natural color variation may occur in this product.

CAPSULE SIZE

Herbal Supplement

Traditional Herb

Botanicals/Herbs

Family owned since 1968.

Please Recycle.

General

CODE 4668C V5

FDA Statement of Identity

A Dietary Supplement

Storage

Store in a cool, dry place after opening.

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

See for yourself

Eyebright Herb 410 mg by NOW label

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

Eyebright Herb 410 mg 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 Eyebright Herb 410 mg by NOW

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

Serving size2 Veg Capsule(s) Dosage formCapsule Servings per container50 Amounts shown are per serving.

Eyebright

Interacts with
86 drugs
820 mg per serving

Eyebright is a traditional herb long used for minor eye irritation, redness, and allergy symptoms, but high-quality human studies are very limited. Th...

Eyebright monograph & interactions

Other (inactive) ingredients: Cellulose, Stearic Acid. These complete the product’s ingredient list but are not active constituents.

Interaction report

Eyebright Herb 410 mg by NOW Drug Interactions

Want to check YOUR meds against Eyebright Herb 410 mg?

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
86Drugs
86 Moderate

Ingredients driving the most interactions

Eyebright 86

Individual Drug Interactions

The ingredients in Eyebright Herb 410 mg interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in Eyebright Herb 410 mg interact with drugs. Each result below shows which ingredient is responsible. Eyebright

Each ingredient & the kinds of drugs it affects

For each ingredient in Eyebright Herb 410 mg 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.

Eyebright1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, eyebright might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that eyebright lowers blood glucose levels.

Likelihood Possible Evidence D
Eyebright full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Eyebright Herb 410 mg, from the product label.

NOW

See all NOW products
Name
NOW Foods
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
nowfoods.com
Pharmacist Counseling Corner

Eyebright Herb 410 mg by NOW: Common Questions

Does Eyebright Herb 410 mg by NOW interact with any medications?
Yes. Based on its ingredients, Eyebright Herb 410 mg has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Eyebright Herb 410 mg 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 use eyebright while I'm pregnant or breastfeeding?
No — the safety data advises against it in both cases because there isn't enough information about safety. Talk with your doctor or pharmacist for personalized advice.
Does eyebright actually work for colds or hay fever?
The evidence isn't established in our data. We have insufficient reliable evidence for allergic rhinitis (hay fever), common cold, cough, and other respiratory conditions — so we can't say whether it works.
Can I put eyebright directly in my eyes?
The data advises caution. Eyebright is likely safe as a tea taken by mouth, but using homemade or non-sterile preparations directly in the eye is risky.
What side effects has eyebright been reported to cause?
Some people have reported confusion, headache, nausea, constipation, cough, shortness of breath, and nasal congestion when taking it by mouth — though these aren't common.

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

Not sure if Eyebright Herb 410 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Eyebright Herb 410 mg label
Go deeper

The Full Monographs Behind Eyebright Herb 410 mg’s Ingredients

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

Herb & supplement monograph

Eyebright

Interacts with 86 drugs

Eyebright is a traditional herb long used for minor eye irritation, redness, and allergy symptoms, but high-quality human studies are very limited. There is not enough reliable evidence to c...

Read the full Eyebright monograph →
Sources

Sources & How We Checked

Eyebright Herb 410 mg'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 4 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.

Eyebright 4 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Wichtl MW. Herbal Drugs and Phytopharmaceuticals. Ed. N.M. Bisset. Stuttgart: Medpharm GmbH Scientific Publishers, 1994.
  3. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  4. Porchezhian, E., Ansari, S. H., and Shreedharan, N. K. Antihyperglycemic activity of Euphrasia officinale leaves. Fitoterapia 2000;71(5):522-526. PubMed

See these in context on the Eyebright 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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