Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Thyme Leaf 900 mg Ingredients & Drug Interactions

by Oomph Naturals

Thyme Leaf 900 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 Thyme Leaf 900 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

Thyme Leaf 900 mg is a dietary supplement by Oomph Naturals with 1 active ingredient. Its ingredients are commonly taken for cough and respiratory congestion, sore throat, digestive upset.Based on those ingredients, 379 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Thyme. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Thyme Leaf 900 mg by Oomph Naturals

Ask about any prescription or over-the-counter medication and we check it for interactions with Thyme Leaf 900 mg by Oomph Naturals — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Thyme Leaf 900 mg by Oomph Naturals

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 11, 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: thyme leaf at 900 mg per capsule. Thyme is an herb used traditionally to support respiratory health and other functions, though reliable evidence for specific benefits is limited in our data.

The capsule also contains gelatin and powdered rice as inactive ingredients.

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 Thyme product and its label doesn't state a use — see Thyme'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.

Our data doesn't establish reliable evidence that thyme works for the conditions it's commonly used for—bronchitis, aging skin, alopecia areata, and the common cold all carry an "Insufficient Reliable Evidence To Rate" rating. That doesn't mean it doesn't work; it means the research to prove it isn't solid enough for us to say either way.

The evidence, ingredient by ingredient Thyme

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.

Thyme in food amounts and as a tea is generally well tolerated. When taken as a medicine in capsule form like this one, it seems to be well tolerated too, though safety data for medicinal doses isn't as extensive as for food use.

The most common side effects reported are allergic reactions, diarrhea, dizziness, headache, heartburn, nausea, or vomiting when taken by mouth. If you apply thyme topically, watch for contact dermatitis or skin irritation.

Important note: the concentrated essential oil can be toxic if swallowed, so this product should not be confused with pure thyme essential oil. We'd advise caution with medicinal doses unless your doctor has approved it.

Side effects, ingredient by ingredient Thyme

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 — Thyme.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 379 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.

Check your medications if you take estrogens or hormone replacement therapy, blood thinners or antiplatelet drugs (like warfarin or aspirin), anticholinergic drugs, or cholinergic drugs. All carry Moderate interaction warnings with thyme.

Use the medication checker below with your exact prescriptions.

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.

Thyme is a familiar herb generally well tolerated at medicinal doses, but it interacts with a long list of medications—particularly hormones, blood thinners, and drugs affecting the nervous system. Talk to your pharmacist before you start, especially if you're on any prescription medication.

The evidence for what it actually does isn't established in our data, so be realistic about what to expect.

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 25, 2024.

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 Thyme Leaf 900 mg, straight from the product label.

Brand Oomph Naturals
Barcode (UPC) B0BQTBKCR3
Net contents 90 Capsule(s)
Market status On market
Date entered into DSLD Jul 25, 2024
DSLD ID 314045
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar 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 Thyme Leaf 900 mg by Oomph Naturals, 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:
3 Quick Release Capsule(s)
Maximum serving Sizes:
3 Quick Release Capsule(s)
Servings per container
30
UPC/BARCODE
B0BQTBKCR3
IngredientAmount% DV
Thyme900 mg--

Other ingredients: Gelatin, Rice, Powder

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.
General Statements

New

Unleash your oomph!

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement take three (3) capsule once a day with a meal or as directed by your healthcare practitioner.

Precautions

Caution: Do not exceed recommended dose.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult a physician before using this or any dietary supplement.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult a physician before using this or any dietary supplement. Keep out of reach of children. Not intended for use by persons under the age of 18.

Do not use if safety seal is damaged or missing.

Storage

Store in a cool, dry place.

FDA Disclaimer Statement

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

Seals/Symbols

Formulated in the USA American Product Good manufacturing practice GMP Certified Ethically sourced

Formulation

Dairy free Non-GMO Gluten free Gluten free, non-GMO, dairy free

Botanical support for the throat and upper respiratory system Made under strict GMP guidelines

Contains no: Artificial coloring, artificial flavor, preservatives, yeast, corn, milk or milk derivatives, lactose, salt, sodium soy, sugar, gluten, starch or wheat.

FDA Statement of Identity

Dietary Supplement

Formula

Oomph Naturals Thyme Leaf...Throat and upper respiratory system Thyme Leaf 900 mg per serving

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

See for yourself

Thyme Leaf 900 mg by Oomph Naturals label

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

Thyme Leaf 900 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 Thyme Leaf 900 mg by Oomph Naturals

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

Serving size3 Quick Release Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Thyme

Interacts with
379 drugs
900 mg per serving

Thyme is a common kitchen herb that has long been used for coughs, sore throats, and digestive complaints. It is generally safe in the amounts found i...

Thyme monograph & interactions

Other (inactive) ingredients: Gelatin, Rice, Powder. These complete the product’s ingredient list but are not active constituents.

Interaction report

Thyme Leaf 900 mg by Oomph Naturals Drug Interactions

Want to check YOUR meds against Thyme Leaf 900 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
379Drugs
379 Moderate

Ingredients driving the most interactions

Thyme 379

Individual Drug Interactions

The ingredients in Thyme Leaf 900 mg interact with 379 drugs. Click any drug to see the details.

1 of the 1 ingredient in Thyme Leaf 900 mg interact with drugs. Each result below shows which ingredient is responsible. Thyme

Each ingredient & the kinds of drugs it affects

For each ingredient in Thyme Leaf 900 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.

Thyme4 drug types · 379 drugs

Anticholinergic Drugs

Theoretically, concurrent use of anticholinergic drugs and thyme essential oil might reduce the effects of anticholinergic drugs.
In vitro evidence suggests that thyme essential oil and specific essential oil constituents like thymohydroquinone and carvacrol can inhibit acetylcholinesterase (AChE). However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, thyme leaf extract might have additive effects with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that thyme leaf extract has antiplatelet effects. However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Cholinergic Drugs

Theoretically, concurrent use of cholinergic drugs and thyme essential oil might cause additive cholinergic effects.
In vitro evidence suggests that thyme essential oil and specific essential oil constituents like thymohydroquinone and carvacrol can inhibit acetylcholinesterase (AChE). However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Estrogens

Theoretically, thyme might competitively inhibit the effects of estrogen replacement therapy.
In vitro research shows that thyme has estrogen receptor-binding activity and phytoestrogen content. However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Thyme full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Thyme Leaf 900 mg, from the product label.

Oomph Naturals

See all Oomph Naturals products
Name
Oomph Naturals
Street Address
380 Jelliff Ave
City
Newark
State
NJ
ZipCode
07108
Phone Number
(855) 686-6674
Pharmacist Counseling Corner

Thyme Leaf 900 mg by Oomph Naturals: Common Questions

Does Thyme Leaf 900 mg by Oomph Naturals interact with any medications?
Yes. Based on its ingredients, Thyme Leaf 900 mg has a known interaction with 379 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Thyme Leaf 900 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.
Is thyme safe during pregnancy or while breastfeeding?
According to our data, thyme is rated Likely Safe in pregnancy and lactation. That said, medicinal doses haven't been studied as thoroughly as food amounts, so it's smart to run it by your doctor or pharmacist for personalized advice before you take it.
What are the side effects I should watch for?
When taken by mouth, the most common ones are allergic reactions, diarrhea, dizziness, headache, heartburn, nausea, or vomiting. Thyme is generally well tolerated, so serious side effects are uncommon, but let us know if you experience any of these.
Does thyme actually work for colds or bronchitis?
Our data shows insufficient reliable evidence to say whether thyme works for those conditions. Thyme has a long folk use, but the research backing it up isn't solid enough for us to rate it as effective.
Is this the same as thyme essential oil?
No—this is a capsule of thyme leaf powder, not the concentrated essential oil. The essential oil can be toxic if swallowed, so don't confuse the two.
Why does this interact with so many medications?
Thyme has several active compounds that can affect estrogen receptors, blood clotting, and acetylcholine (a brain chemical). Most of these interactions are theoretical—shown in labs but not yet confirmed in people—but they're worth taking seriously, especially with medications that are sensitive to those pathways.

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

Not sure if Thyme Leaf 900 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.

Thyme Leaf 900 mg label
Go deeper

The Full Monographs Behind Thyme Leaf 900 mg’s Ingredients

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

Herb & supplement monograph

Thyme

Interacts with 379 drugs

Thyme is a common kitchen herb that has long been used for coughs, sore throats, and digestive complaints. It is generally safe in the amounts found in food, and some cough products that com...

Read the full Thyme monograph →
Sources

Sources & How We Checked

Thyme Leaf 900 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 18 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.

Thyme 18 references
  1. Zava DT, Dollbaum CM, Blen M. Estrogen and progestin bioactivity of foods, herbs, and spices. Proc Soc Exp Biol Med 1998;217:369-78. PubMed
  2. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  3. Okazaki K, Kawazoe K, Takaishi Y. Human platelet aggregation inhibitors from thyme (Thymus vulgaris L.). Phytother Res 2002;16:398-9. .
  4. Spiewak R, Skorska C, Dutkiewicz J. Occupational airborne contact dermatitis caused by thyme dust. Contact Dermatitis 2001;44:235-9. . PubMed
  5. Ernst E, Marz R, Sieder C. A controlled multi-centre study of herbal versus synthetic secretolytic drugs for acute bronchitis. Phytomedicine 1997;4:287-93. PubMed
  6. Yamamoto J, Yamada K, Naemura A, et al. Testing various herbs for antithrombotic effect. Nutrition 2005;21(5):580-7. PubMed
  7. Tognolini, M., Barocelli, E., Ballabeni, V., Bruni, R., Bianchi, A., Chiavarini, M., and Impicciatore, M. Comparative screening of plant essential oils: phenylpropanoid moiety as basic core for antiplatelet activity. Life Sci. 2-23-2006;78(13):1419-1432. PubMed
  8. Mackiewicz, B., Skorska, C., Dutkiewicz, J., Michnar, M., Milanowski, J., Prazmo, Z., Krysinska-Traczyk, E., and Cisak, E. Allergic alveolitis due to herb dust exposure. Ann Agric Environ Med 1999;6(2):167-170.
  9. Martinez-Gonzalez, M. C., Goday Bujan, J. J., Martinez, Gomez W., and Fonseca, Capdevila E. Concomitant allergic contact dermatitis due to Rosmarinus officinalis (rosemary) and Thymus vulgaris (thyme). Contact Dermatitis 2007;56(1):49-50.
  10. Jukic, M., Politeo, O., Maksimovic, M., Milos, M., and Milos, M. In vitro acetylcholinesterase inhibitory properties of thymol, carvacrol and their derivatives thymoquinone and thymohydroquinone. Phytother.Res 2007;21(3):259-261.
  11. Marzian, O. [Treatment of acute bronchitis in children and adolescents. Non-interventional postmarketing surveillance study confirms the benefit and safety of a syrup made of extracts from thyme and ivy leaves]. MMW.Fortschr.Med 6-28-2007;149(27-28 Suppl
  12. Cuzzolin, L. and Benoni, G. Attitudes and knowledge toward natural products safety in the pharmacy setting: an Italian study. Phytother.Res 2009;23(7):1018-1023. PubMed
  13. Berova, N., Stransky, L., and Krasteva, M. Studies on contact dermatitis in stomatological staff. Dermatol.Monatsschr. 1990;176(1):15-18.
  14. Smeenk, G., Kerckhoffs, H. P., and Schreurs, P. H. Contact allergy to a reaction product in Hirudoid cream: an example of compound allergy. Br.J Dermatol. 1987;116(2):223-231.
  15. Le Roy, R., Grosshans, E., and Foussereau, J. [Investigation of contact allergies in 100 cases of ulcus cruris (author's transl)]. Derm.Beruf.Umwelt. 1981;29(6):168-170.
  16. Lorenzi, S., Placucci, F., Vincenzi, C., Bardazzi, F., and Tosti, A. Allergic contact dermatitis due to thymol. Contact Dermatitis 1995;33(6):439-440. PubMed
  17. Bahadoran P, Rokni FK, Fahami F. Investigating the therapeutic effect of vaginal cream containing garlic and thyme compared to clotrimazole cream for the treatment of mycotic vaginitis. Iran J Nurs Midwifery Res 2010;15(Suppl 1):343-9.
  18. Erol S, Aydin B, Dilli D, Okumus N, Zenciroglu A, Gündüz M. An interesting newborn case of fructose 1-6 diphosphatase deficiency triggered after thyme juice ingestion. Clin Lab. 2014;60(1):151-3. PubMed

See these in context on the Thyme 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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team