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Dietary supplement

Bay Leaf Ingredients & Drug Interactions

by Mason Natural

Bay Leaf 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 Bay Leaf 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

Bay Leaf is a dietary supplement by Mason Natural with 1 active ingredient. Its ingredients are commonly taken for cooking and flavoring, digestive upset, blood sugar support.Based on those ingredients, 335 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bay Leaf 4:1 concentrate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Bay Leaf by Mason Natural

Ask about any prescription or over-the-counter medication and we check it for interactions with Bay Leaf by Mason Natural — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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Computed from our clinical databases

HelloPharmacist Scorecard of Bay Leaf by Mason Natural

Four independent checks of what is known — a summary of the available information, not a grade of the product itself.

Evidence for Intended Use
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

The stated purpose hasn't been mapped to our evidence data yet.

Why this rating?
  • We haven't mapped this product's purpose to our evidence data yet — it'll be graded on the next content refresh.
Ingredient Transparency
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.
Known Interaction Concern
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 — Bay Leaf.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 335 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.
Safety Information
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.

HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

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 Bay Leaf, straight from the product label.

Brand Mason Natural
Barcode (UPC) 311845180452
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Apr 22, 2021
DSLD ID 244951
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
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 Bay Leaf by Mason Natural, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
60
UPC/BARCODE
311845180452
IngredientAmount% DV
Bay Leaf 4:1 concentrate125 mg--

Other ingredients: Microcrystalline Cellulose, Gelatin, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Maltodextrin

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

Mason guarantee Laboratory Tested cGMP Certified Good Manufacturing Practice

General Statements

N Mason natural Est. 1967

Please recycle

Formula

Whole herb Bay Leaf

Contains naturally harvested herbal products.

Formulation

May Support healthy blood sugar & cholesterol levels

Color variation is possible.

Guaranteed no added: Sugar, yeast, soy, wheat, dairy, fish, tree nuts, peanuts, egg, fragrance, artificial colors or flavors, preservatives, animal products, crustacean shellfish.

Soy free

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: Adults - Take one capsule daily, preferably with food, as a dietary supplement.

FDA Disclaimer Statement

This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Precautions

Caution: If you are pregnant, nursing, taking any medications or have any medical condition, consult your physician before use.

Discontinue use and consult your physician if any adverse reactions occur.

Keep out of reach of children.

Tamper-Evident Seal: Do not use product if seal appears tampered.

Storage

Store in a dry place under controlled room temperature: 20 degrees - 25 degrees C (68 degrees - 77 degrees F).

Brand IP Statement(s)

Mason Natural is a registered trademark and does not refer to any product or ingredient claim.

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

See for yourself

Bay Leaf by Mason Natural label

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

Bay Leaf 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 Bay Leaf by Mason Natural

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Bay Leaf 4:1 concentrate

Interacts with
335 drugs
125 mg per serving

Bay leaf is a common culinary herb that is safe in the small amounts used in cooking. Some people take it for digestion, blood sugar, or colds, but st...

Bay Leaf 4:1 concentrate monograph & interactions

Other (inactive) ingredients: Microcrystalline Cellulose, Gelatin, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Maltodextrin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Bay Leaf by Mason Natural Drug Interactions

Bay Leaf contains a single active ingredient, and it has known interactions with 335 medications. Here’s the picture, then you can look up your own drug.

Want to check YOUR meds against Bay Leaf?

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
335Drugs
335 Moderate

Ingredients driving the most interactions

Bay Leaf 4:1 concentrate 335

Individual Drug Interactions

The ingredients in Bay Leaf interact with 335 drugs. Click any drug to see the details.

1 of the 1 ingredient in Bay Leaf interact with drugs. Each result below shows which ingredient is responsible. Bay Leaf 4:1 concentrate

Each ingredient & the kinds of drugs it affects

For each ingredient in Bay Leaf 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.

Bay Leaf 4:1 concentrate3 drug types · 335 drugs

Antidiabetes Drugs

Concomitant use of bay leaf with antidiabetes drugs might increase the risk of hypoglycemia.
Preliminary clinical research shows that bay leaf can lower blood glucose levels in patients with diabetes who are already taking antidiabetes medication. Advise patients to monitor glucose levels closely. Dose adjustments may be necessary.

Likelihood Possible Evidence D
Cns Depressants

Theoretically, taking bay leaf in large amounts may enhance the therapeutic and adverse effects of sedatives.
Bay leaf contains methyl eugenol. Animal research shows that methyl eugenol has sedative properties. Avoid concomitant use.

Likelihood Possible Evidence D
Narcotic Drugs

Theoretically, taking bay leaf in large amounts may enhance the therapeutic and adverse effects of narcotics. Avoid concomitant use.

Likelihood Possible Evidence D
Bay Leaf 4:1 concentrate full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Bay Leaf, from the product label.

Mason Natural

See all Mason Natural products
Name
Mason Vitamins, Inc.
City
Miami Lakes
State
FL
ZipCode
33014
Phone Number
1-888-860-5376
Web Address
www.MasonVitamins.com
Pharmacist Counseling Corner

Bay Leaf by Mason Natural: Common Questions

Does Bay Leaf by Mason Natural interact with any medications?
Yes. Based on its ingredients, Bay Leaf has a known interaction with 335 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Bay Leaf 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.

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

Not sure if Bay Leaf 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.

Bay Leaf label
Go deeper

The Full Monographs Behind Bay Leaf’s Ingredients

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

Herb & supplement monograph

Bay Leaf

Interacts with 335 drugs

Bay leaf is a common culinary herb that is safe in the small amounts used in cooking. Some people take it for digestion, blood sugar, or colds, but strong human evidence for these uses is la...

Read the full Bay Leaf monograph →
Sources

Sources & How We Checked

Bay Leaf'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 7 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.

Bay Leaf 7 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. Cartier LC, Lehrer A, Malo JL. Occupational asthma caused by aromatic herbs. Allergy 1996;51:647-9. DOI
  3. Adisen E, Onder M. Allergic contact dermatitis from Laurus nobilis oil induced by massage. Contact Dermatitis 2007;56:360-1.
  4. Ozden, M. G., Oztas, P., Oztas, M. O., and Onder, M. Allergic contact dermatitis from Laurus nobilis (laurel) oil. Contact Dermatitis 2001;45(3):178. PubMed
  5. Khan, A., Zaman, G., and Anderson, R. A. Bay leaves improve glucose and lipid profile of people with type 2 diabetes. J Clin Biochem.Nutr. 2009;44(1):52-56. PubMed
  6. Cheminat, A., Stampf, J. L., and Benezra, C. Allergic contact dermatitis to laurel (Laurus nobilis L.): isolation and identification of haptens. Arch Dermatol Res 1984;276(3):178-181. PubMed
  7. Vassileva S, Darlenski R. Bay leaf phytodermatitis. Contact Dermatitis. 2020 Nov 15. PubMed

See these in context on the Bay Leaf 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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