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Dietary supplement

Rosemary Extract 500 mg Ingredients & Drug Interactions

by Swanson Superior Herbs

Rosemary Extract 500 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 Rosemary Extract 500 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

Rosemary Extract 500 mg is a dietary supplement by Swanson Superior Herbs with 1 active ingredient. Its ingredients are commonly taken for memory and concentration, digestive upset, hair growth.Based on those ingredients, 372 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Rosemary 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 Rosemary Extract 500 mg by Swanson Superior Herbs

Ask about any prescription or over-the-counter medication and we check it for interactions with Rosemary Extract 500 mg by Swanson Superior Herbs — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Rosemary Extract 500 mg by Swanson Superior Herbs

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 10, 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 supplement contains one active ingredient: rosemary extract at 500 mg per capsule. Rosemary is an herb from the mint family, used traditionally in cooking and herbal medicine.

The extract concentrates the plant's active compounds into a single dose. The capsule itself is made from gelatin and filled with rice bran, calcium palmitate, and silica as inactive ingredients — these are binders and flow agents that help the capsule hold together and flow smoothly during manufacturing.

Does it work?

Moderate evidence
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

This product doesn't appear to be marketed for a specific use, so we graded Rosemary's overall clinical evidence instead.

Moderate

Some clinical evidence supports Rosemary for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Memory — rated "Possibly Effective" (Natural Medicines).

Rosemary extract is rated possibly effective for memory support, but the evidence isn't strong enough yet. For other uses listed — including age-related cognitive decline, alopecia areata (patchy hair loss), and fatty liver disease — we don't have enough reliable data to say whether it works or not.

The evidence, ingredient by ingredient Rosemary

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.

Rosemary in normal food amounts is considered safe. However, concentrated extracts and undiluted rosemary oil require caution.

The facts note that medicinal or large doses should be avoided during pregnancy. For breastfeeding, there isn't enough safety data on medicinal doses, so avoid them — food amounts are likely fine.

Side effects reported include allergic reactions when applied to skin or inside the mouth, with lip and gum swelling possible. Some people have developed a work-related asthma from inhaling rosemary dust.

The undiluted oil and one of rosemary's natural compounds (camphor) may theoretically cause seizures, though this is rare. A small number of sensitive people have experienced sun sensitivity, redness, or skin irritation after using rosemary topically.

Side effects, ingredient by ingredient Rosemary

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 — Rosemary.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 372 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 this rosemary extract, double-check with your doctor or pharmacist if you're on blood thinners or antiplatelet drugs, diabetes medications, aspirin, or salicylate-containing pain relievers like choline magnesium trisalicylate or salsalate — these carry Moderate interaction risk. Also mention any medications your liver breaks down, since rosemary may affect how some of those work.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

If you have good memory and no bleeding disorders or diabetes, rosemary extract may be worth trying — the evidence for memory is modest but real. However, if you take blood thinners, diabetes medication, aspirin, or certain pain relievers, you'll need to check with your doctor or pharmacist first, because the bleeding and low blood sugar risks are real.

Anyone who's pregnant should skip medicinal doses, and breastfeeding parents should stick to food amounts only.

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 Aug 31, 2018.

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 Rosemary Extract 500 mg, straight from the product label.

Brand Swanson Superior Herbs
Barcode (UPC) 087614141367
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Aug 31, 2018
DSLD ID 176328
Product type Botanical
Supplement form Capsule
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 Rosemary Extract 500 mg by Swanson Superior Herbs, 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)
UPC/BARCODE
087614141367
IngredientAmount% DV
Rosemary extract500 mg--

Other ingredients: Gelatin, Rice Bran, Calcium Palmitate, Silica

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.
FDA Statement of Identity

Standardized Herbal Supplement

Seals/Symbols

Guaranteed purity & potency

Precautions

Do not use if seal is broken.

Keep out of reach of children.

Warning: Do not take this product if you are pregnant or nursing.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one capsule one to two times per day with water.

General Statements

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

General

SWH136 Rev 0 07 21 17

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

See for yourself

Rosemary Extract 500 mg by Swanson Superior Herbs label

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

Rosemary Extract 500 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 Rosemary Extract 500 mg by Swanson Superior Herbs

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

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

Rosemary extract

Interacts with
372 drugs
500 mg per serving Form: Rosmarinic Acid

Rosemary is a fragrant Mediterranean herb that is safe and flavorful in normal food amounts. Some early research suggests possible benefits for memory...

Rosemary extract monograph & interactions

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

Interaction report

Rosemary Extract 500 mg by Swanson Superior Herbs Drug Interactions

Want to check YOUR meds against Rosemary Extract 500 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
372Drugs
212 Moderate 160 Minor

Ingredients driving the most interactions

Rosemary extract 372

Individual Drug Interactions

The ingredients in Rosemary Extract 500 mg interact with 372 drugs. Click any drug to see the details.

1 of the 1 ingredient in Rosemary Extract 500 mg interact with drugs. Each result below shows which ingredient is responsible. Rosemary extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Rosemary Extract 500 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.

Rosemary extract6 drug types · 372 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, rosemary may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that rosemary inhibits platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, taking rosemary with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research shows that rosemary extract can decrease blood glucose levels in diabetic models. However, research in humans is conflicting. Although rosemary powder decreased blood glucose levels in healthy adults, no change in blood glucose levels was seen in adults with type 2 diabetes, most of whom were taking antidiabetes drugs.

Likelihood Possible Evidence B
Aspirin

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as aspirin.
Rosemary is reported to contain salicylates.

Likelihood Possible Evidence D
Choline Magnesium Trisalicylate (Trilisate)

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as choline magnesium trisalicylate.
Rosemary is reported to contain salicylate.

Likelihood Possible Evidence D
Salsalate (Disalcid)

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as salsalate.
Rosemary is reported to contain salicylate.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that rosemary induces CYP1A2 enzymes. This effect has not been reported in humans.

Likelihood Unlikely Evidence D
Rosemary extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Rosemary Extract 500 mg, from the product label.

Swanson Superior Herbs

See all Swanson Superior Herbs products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swansonvitamins.com
Pharmacist Counseling Corner

Rosemary Extract 500 mg by Swanson Superior Herbs: Common Questions

Does Rosemary Extract 500 mg by Swanson Superior Herbs interact with any medications?
Yes. Based on its ingredients, Rosemary Extract 500 mg has a known interaction with 372 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Rosemary Extract 500 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 rosemary extract safe to take if I'm on aspirin?
Not without checking first. Rosemary contains salicylates — the same compound in aspirin — so taking them together might add up to a higher blood-thinning effect than either one alone. Talk to your doctor or pharmacist before combining them.
Can I take this if I have diabetes?
Possibly, but you need medical guidance. Animal studies show rosemary can lower blood sugar, so mixing it with diabetes medication could push your levels too low. Check with your doctor or pharmacist and have them monitor your blood sugar closely if you do take it.
Will rosemary extract really help my memory?
It's possibly effective based on the data we hold, but the evidence isn't strong. It may help some people, though it won't be a miracle worker. If you try it, give it a fair stretch — benefits often take weeks to show up, if they do.
Is it safe to take during pregnancy?
No. Food amounts of rosemary are fine, but medicinal doses are rated possibly unsafe during pregnancy. If you're pregnant, skip the supplement and stick to normal cooking amounts if any.
Can this cause allergic reactions?
Yes, in some people. Allergic reactions are possible when rosemary is applied to skin or used in the mouth, and a small number of people — especially those in occupations where they breathe rosemary dust — have developed asthma-like reactions. If you have sensitive skin or respiratory allergies, mention this to your pharmacist or doctor first.
Can I take this with a blood thinner like warfarin?
Not without your doctor's approval. Rosemary may increase bleeding risk when combined with blood thinners or antiplatelet drugs. Your doctor needs to weigh the benefits and risks and may want to monitor you more closely. Do not start or stop this supplement on your own if you're on a blood thinner.

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

Not sure if Rosemary Extract 500 mg is safe with your meds?

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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.

Rosemary Extract 500 mg label
Go deeper

The Full Monographs Behind Rosemary Extract 500 mg’s Ingredients

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

Herb & supplement monograph

Rosemary

Interacts with 372 drugs

Rosemary is a fragrant Mediterranean herb that is safe and flavorful in normal food amounts. Some early research suggests possible benefits for memory, mood, and hair growth, but the evidenc...

Read the full Rosemary monograph →
Sources

Sources & How We Checked

Rosemary Extract 500 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 20 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.

Rosemary 20 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
  3. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  4. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  5. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  6. Cartier LC, Lehrer A, Malo JL. Occupational asthma caused by aromatic herbs. Allergy 1996;51:647-9. DOI
  7. Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
  8. Swain AR, Dutton SP, Truswell AS. Salicylates in foods. J Am Diet.Assoc 1985;85(8):950-60. DOI
  9. Zhu BT, Loder DP, Cai MX, et al. Dietary administration of an extract from rosemary leaves enhances the liver microsomal metabolism of endogenous estrogens and decreases their uterotropic action in CD-1 mice. Carcinogenesis 1998;19(10):1821-7. PubMed
  10. Debersac P, Heydel JM, Amiot MJ, et al. Induction of cytochrome P450 and/or detoxication enzymes by various extracts of rosemary: description of specific patterns. Food Chem Toxicol 2001;39(9):907-18. PubMed
  11. Debersac P, Vernevaut MF, Amiot MJ, et al. Effects of a water-soluble extract of rosemary and its purified component rosmarinic acid on xenobiotic-metabolizing enzymes in rat liver. Food Chem Toxicol 2001;39(2):109-17. PubMed
  12. Lee JJ, Jin YR, Lee JH, et al. Antiplatelet activity of carnosic acid, a phenolic diterpene from Rosmarinus officinalis. Planta Med 2007;73(2):121-7.
  13. Yamamoto J, Yamada K, Naemura A, et al. Testing various herbs for antithrombotic effect. Nutrition 2005;21(5):580-7. PubMed
  14. Naemura A, Ura M, Yamashita T, et al. Long-term intake of rosemary and common thyme herbs inhibits experimental thrombosis without prolongation of bleeding time. Thromb Res 2008;122(4):517-22. PubMed
  15. Lee JJ, Jin YR, Lim Y, et al. Antiplatelet activity of carnosol is mediated by the inhibition of TXA2 receptor and cytosolic calcium mobilization. Vascul Pharmacol 2006;45:148-53. PubMed
  16. Bakirel, T., Bakirel, U., Keles, O. U., Ulgen, S. G., and Yardibi, H. In vivo assessment of antidiabetic and antioxidant activities of rosemary (Rosmarinus officinalis) in alloxan-diabetic rabbits. J Ethnopharmacol 2-28-2008;116(1):64-73. PubMed
  17. Erenmemisoglu, A., Saraymen, R., and Ustun, S. Effect of a Rosmarinus officinalis leave extract on plasma glucose levels in normoglycaemic and diabetic mice. Pharmazie 1997;52(8):645-646.
  18. Valones MAA, Silva ICG, Gueiros LAM, Leão JC, Caldas AF Jr, Carvalho AAT. Clinical assessment of rosemary-based toothpaste (Rosmarinus officinalis Linn.): A randomized controlled double-blind study. Braz Dent J. 2019;30(2):146-151. PubMed
  19. Quirarte-Báez SM, Zamora-Perez AL, Reyes-Estrada CA, et al. A shortened treatment with rosemary tea (rosmarinus officinalis) instead of glucose in patients with diabetes mellitus type 2 (TSD). J Popul Ther Clin Pharmacol. 2019;26(4):e18-e28.
  20. Al Jamal A. Effect of rosemary (Rosmarinus officinalis) on lipid profiles and blood glucose in human diabetic patients (type-2). African J. Biochem. Res. 2014;8(8):147-50. DOI

See these in context on the Rosemary 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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