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Dietary supplement

Hawthorn Berry, Flower & Leaf Ingredients & Drug Interactions

by Gaia Herbs

Hawthorn Berry, Flower & Leaf label
See full label image
Liquid Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Hawthorn Berry, Flower & 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: Major

Hawthorn Berry, Flower & Leaf is a dietary supplement by Gaia Herbs with 1 active ingredient. Its ingredients are commonly taken for heart failure symptoms, high blood pressure, chest pain (angina).Based on those ingredients, 191 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Hawthorn berry, flower and leaf 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 Hawthorn Berry, Flower & Leaf by Gaia Herbs

Ask about any prescription or over-the-counter medication and we check it for interactions with Hawthorn Berry, Flower & Leaf by Gaia Herbs — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Hawthorn Berry, Flower & Leaf by Gaia 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 Aug 6, 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: hawthorn berry, flower, and leaf extract. Hawthorn has been used traditionally to support heart and circulatory function.

The liquid form also includes vegetable glycerin and water as inactive ingredients (the base in which the extract is dissolved).

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 Hawthorn's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: heart and cardiovascular health support.
  • We looked for evidence on: Angina, Arrhythmia, Cardiovascular disease (CVD), Congestive heart failure (CHF), Hypertension, heart function — and 2 related terms.
  • The closest evidence on file: Hawthorn is rated "Insufficient Reliable Evidence To Rate" for Angina (Natural Medicines).
  • Also on file: Hawthorn is rated "Insufficient Reliable Evidence To Rate" for Arrhythmia, Cardiovascular disease (CVD), Congestive heart failure (CHF), Hypertension.

The evidence supporting hawthorn for specific conditions isn't established in the data we hold. Our monograph lists insufficient reliable evidence for angina, anxiety, arrhythmia, atherosclerosis, cardiovascular disease, and cognitive function.

That doesn't mean hawthorn doesn't work—it means large, well-designed human studies specific to these uses are lacking. If you're considering it for a particular heart or circulation concern, talk it over with your doctor or pharmacist.

The evidence, ingredient by ingredient Hawthorn

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.

Hawthorn is generally well tolerated when used appropriately. However, because it affects the heart and blood pressure, anyone with a heart condition should only use it under medical supervision.

Serious adverse effects are rare but have been reported, including a handful of cases of allergic-type reactions affecting the kidneys, and isolated reports of irregular heartbeat, breathing changes, or circulation problems in patients with heart failure. The safety data advises against use during pregnancy and while breastfeeding due to insufficient information.

Side effects, ingredient by ingredient Hawthorn

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Hawthorn.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications.
  • For scale: 191 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 product, check with your doctor or pharmacist if you take nitrates or phosphodiesterase-5 inhibitors (Major severity)—both carry a serious risk of blood pressure collapse when combined with hawthorn. Also flag any beta-blockers, blood thinners (anticoagulants or antiplatelet drugs), calcium channel blockers, or digoxin (Moderate severity).

Use the medication checker on this page to see your specific drugs.

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. Major medication interactions have been identified, and safety information is well characterized.

Hawthorn Berry, Flower & Leaf may appeal to someone interested in traditional heart and circulation support—but it's not a casual supplement if you have any cardiac condition or take heart or blood-pressure medications. The interaction profile is substantial, and you'll need to check your exact medications with your doctor or pharmacist before starting.

If you don't have a heart condition and take none of the affected drug classes, the risk profile is lower, but medical supervision is still wise.

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 Dec 22, 2017.

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 Hawthorn Berry, Flower & Leaf, straight from the product label.

Brand Gaia Herbs
Barcode (UPC) 751063361507
Net contents 1 fl. Oz.; 30 mL
Market status On market
Date entered into DSLD Dec 22, 2017
DSLD ID 79986
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 Hawthorn Berry, Flower & Leaf by Gaia 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:
1.33 mL
Maximum serving Sizes:
2 mL
Servings per container
15
UPC/BARCODE
751063361507
IngredientAmount% DV
Hawthorn berry, flower and leaf extract2 mL--

Other ingredients: Vegetable Glycerin, Water

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

Suggested Use Adults take 40-60 drops of extract in a small amount of water 3-4 times daily between meals. Shake well before using.

Use only as directed on label.

Precautions

Not to be used during pregnancy or lactation. If you have a medical condition or take medications, please consult with your doctor before use.

Keep away from children.

Safety sealed for your protection.

General Statements

You may notice a seaweed like odor from this product, which is naturally occurring in hawthorne flower.

667 mg/ml herb equivalency

Meet Your Herbs at GaiaHerbs.com

Formulation

Alcohol free

FDA Statement of Identity

Dietary Supplement

General

[012] 809-0215

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

See for yourself

Hawthorn Berry, Flower & Leaf by Gaia Herbs label

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

Hawthorn Berry, Flower & 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 Hawthorn Berry, Flower & Leaf by Gaia Herbs

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

Serving size1.33 mL Dosage formLiquid Servings per container15 Amounts shown are per serving.

Hawthorn berry, flower and leaf extract

Interacts with
191 drugs
2 mL per serving

Hawthorn is a plant traditionally used for heart-related complaints, and some studies suggest it may modestly help symptoms of mild heart failure when...

Hawthorn berry, flower and leaf extract monograph & interactions

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

Interaction report

Hawthorn Berry, Flower & Leaf by Gaia Herbs Drug Interactions

Want to check YOUR meds against Hawthorn Berry, Flower & 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
191Drugs
14 Major 177 Moderate

Ingredients driving the most interactions

Hawthorn berry, flower and leaf extract 191

Individual Drug Interactions

The ingredients in Hawthorn Berry, Flower & Leaf interact with 191 drugs. Click any drug to see the details.

1 of the 1 ingredient in Hawthorn Berry, Flower & Leaf interact with drugs. Each result below shows which ingredient is responsible. Hawthorn berry, flower and leaf extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Hawthorn Berry, Flower & 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.

Hawthorn berry, flower and leaf extract6 drug types · 191 drugs

Nitrates

Theoretically, concomitant use might cause additive coronary vasodilatory effects.
Some evidence shows that hawthorn might lower blood pressure due to vasodilatory effects.

Likelihood Probable Evidence D
Phosphodiesterase-5 Inhibitors

Theoretically, concomitant use might result in additive vasodilation and hypotension.
Hawthorn might inhibit PDE-5 and cause vasodilation.

Likelihood Probable Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, hawthorn may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research shows that hawthorn can inhibit platelet aggregation. However, its effect in humans is unclear. One observational study shows that patients taking hawthorn shortly before undergoing coronary artery bypass graft (CABG) surgery or valve replacement surgery have a 10% incidence of postoperative bleeding, compared with 1% in those who never consumed hawthorn extract. However, clinical research shows that taking a specific preparation of dried hawthorn leaves and flowers (Crataesor, Soria Natural Lab) 800 mg three times daily for 15 days does not affect platelet aggregation or levels of thromboxane B2, the metabolite of thromboxane A2, in healthy humans.

Likelihood Possible Evidence D
Beta-Blockers

Theoretically, concomitant use might cause additive effects on blood pressure and heart rate.
Some evidence shows that hawthorn might lower blood pressure and heart rate.

Likelihood Possible Evidence D
Calcium Channel Blockers

Theoretically, concomitant use might cause additive coronary vasodilation and hypotensive effects.
Some evidence shows that hawthorn might lower blood pressure due to vasodilatory effects.

Likelihood Possible Evidence D
Digoxin (Lanoxin)

Theoretically, hawthorn might potentiate the effects and adverse effects of digoxin.
Hawthorn appears to improve cardiac output; however, hawthorn does not appear to affect digoxin pharmacokinetics. Case reports suggest that at least one species of hawthorn root extract (Crataegus mexicana) may produce adverse effects similar to digoxin and can cross-react with digoxin assays, leading to falsely elevated plasma digoxin levels.

Likelihood Possible Evidence D
Hawthorn berry, flower and leaf extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Hawthorn Berry, Flower & Leaf, from the product label.

Gaia Herbs

See all Gaia Herbs products
Name
Gaia Herbs, Inc.
Street Address
101 Gaia Herbs Dr.
City
Brevard
State
NC
ZipCode
28712
Web Address
GaiaHerbs.com
Pharmacist Counseling Corner

Hawthorn Berry, Flower & Leaf by Gaia Herbs: Common Questions

Does Hawthorn Berry, Flower & Leaf by Gaia Herbs interact with any medications?
Yes. Based on its ingredients, Hawthorn Berry, Flower & Leaf has a known interaction with 191 medications, including 14 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Hawthorn Berry, Flower & 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.
Is hawthorn safe if I have heart disease?
Hawthorn is generally well tolerated, but because it affects heart function and blood pressure, anyone with a heart condition should only use it under medical supervision. Your doctor can assess whether it's right for your specific situation.
Can I take hawthorn if I'm pregnant or breastfeeding?
No. There isn't enough safety information, and the data advises against use during pregnancy and while breastfeeding. Talk with your doctor or pharmacist about alternatives if you're interested in heart support during these times.
What does hawthorn actually do?
Hawthorn has been used traditionally to support heart and circulatory function. However, we don't have reliable evidence from large human studies showing it works for specific conditions like angina, arrhythmia, or cardiovascular disease.
Are there any common side effects?
Hawthorn is generally well tolerated. Serious side effects are rare, but isolated cases of allergic reactions, irregular heartbeat, breathing changes, and circulation problems have been reported—mostly in people with existing heart failure.
Can I use this with my blood pressure or heart medications?
Not without checking first. Hawthorn interacts with several classes of heart and blood pressure drugs, including nitrates, some erectile dysfunction medications, beta-blockers, calcium channel blockers, and others. Use the medication checker on this page to see if any of your drugs are affected, then talk it over with your doctor or pharmacist.

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.

Hawthorn Berry, Flower & Leaf label
Go deeper

The Full Monographs Behind Hawthorn Berry, Flower & Leaf’s Ingredients

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

Herb & supplement monograph

Hawthorn

Interacts with 191 drugs

Hawthorn is a plant traditionally used for heart-related complaints, and some studies suggest it may modestly help symptoms of mild heart failure when added to standard care. However, the ev...

Read the full Hawthorn monograph →
Sources

Sources & How We Checked

Hawthorn Berry, Flower & 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 25 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.

Hawthorn 25 references
  1. Tauchert M. Efficacy and safety of crataegus extract WS 1442 in comparison with placebo in patients with chronic stable New York Heart Association class-III heart failure. Am Heart J 2002;143:910-5. PubMed
  2. Pittler MH, Schmidt K, Ernst E. Hawthorn extract for treating chronic heart failure: meta-analysis of randomized trials. Am J Med 2003;114:665-74.. PubMed
  3. Chang Q, Zuo Z, Harrison F, Chow MS. Hawthorn. J Clin Pharmacol 2002;42:605-12.
  4. Holubarsch CJ, Colucci WS, Meinertz T, et al. The efficacy and safety of Crataegus extract WS 1442 in patients with heart failure: the SPICE trial. Eur J Heart Fail 2008;10:1255-63. PubMed
  5. Pittler MH, Guo R, and Ernst E. Hawthorn extract for treating chronic heart failure. Cochrane.Database.Syst Rev 2008:CD005312. PubMed
  6. Zick SM, Vautaw BM, Gillespie B, Aaronson KD. Hawthorn Extract Randomized Blinded Chronic Heart Failure (HERB CHF) trial. Eur J Heart Fail. 2009;11:990-99. PubMed
  7. Werner NS, Duschek S, and Schandry R. D-camphor-crataegus berry extract combination increases blood pressure and cognitive functioning in the elderly - a randomized, placebo controlled double blind study. Phytomedicine. 2009;16:1077-82. PubMed
  8. Dalli E, Colomer E, Tormos MC, et al. Crataegus laevigata decreases neutrophil elastase and has hypolipidemic effect: a randomized, double-blind, placebo-controlled trial. Phytomedicine. 6-15-2011;18:769-75. PubMed
  9. Maek-a-nantawat W, Phonrat B, Dhitavat J, et al. Safety and efficacy of CKBM-A01, a Chinese herbal medicine, among asymptomatic HIV patients. Southeast Asian J Trop.Med Public Health 2009;40:494-501.
  10. Asher GN, Viera AJ, Weaver MA, et al. Effect of hawthorn standardized extract on flow mediated dilation in prehypertensive and mildly hypertensive adults: a randomized, controlled cross-over trial. BMC.Complement Altern.Med 2012;12:26. PubMed
  11. Walker AF, Marakis G, Simpson E, et al. Hypotensive effects of hawthorn for patients with diabetes taking prescription drugs: a randomised controlled trial. Br J Gen.Pract 2006;56:437-43.
  12. Daniele C, Mazzanti G, Pittler MH, et al. Adverse-event profile of Crataegus spp.: a systematic review. Drug Saf 2006;29:523-35. PubMed
  13. Tankanow R, Tamer HR, Streetman DS, et al. Interaction study between digoxin and a preparation of hawthorn (Crataegus oxyacantha). J.Clin.Pharmacol. 2003;43:637-42. DOI
  14. Tauchert, M., Gildor, A., and Lipinski, J. [High-dose Crataegus extract WS 1442 in the treatment of NYHA stage II heart failure]. Herz 1999;24(6):465-474.
  15. Horoz, M., Gok, E., Genctoy, G., Ozcan, T., Olmaz, R., Akca, M., Kiykim, A., and Gurses, I. Crataegus orientalis associated multiorgan hypersensitivity reaction and acute renal failure. Intern.Med 2008;47(23):2039-2042. PubMed
  16. Dalli, E., Valles, J., Cosin-Sales, J., Santos, M. T., Moscardo, A., Milara, J., and Sotillo, J. F. Effects of hawthorn (Crataegus laevigata) on platelet aggregation in healthy volunteers. Thromb.Res 2011;128(4):398-400. PubMed
  17. Rogov VD. [Toxiderma due to the fruits of the hawthorn]. Vestn Dermatol Venerol 1984;7(7):46-47.
  18. Loew D, Albrecht M, and Podzuweit H. Efficacy and tolerability of a Hawthorn preparation in patients with heart failure Stage I and II according to NYHA - a surveillance study. Phytomedicine 1996;3(Suppl 1):92.
  19. Rababa'h AM, Altarabsheh SE, Haddad O, Deo SV, Obeidat Y, Al-Azzam S. Hawthorn Herb Increases the Risk of Bleeding after Cardiac Surgery: An Evidence-Based Approach. Heart Surg Forum 2016;19(4):E175-9. PubMed
  20. Shatoor AS, Soliman H, Al-Hashem F, Gamal BE, Othman A, El-Menshaw N. Effect of hawthorn (Crataegus aronia syn. Azarolus (L)) on platelet function in albino wistar rats. Thromb Res 2012;130(1):75-80. PubMed
  21. Vibes J, Lasserre B, Gleye J, Declume C. Inhibition of thromboxane A2 biosynthesis in vitro by the main components of Crataegus oxyacantha (hawthorn) flower heads. Prostaglandins Leukot Essent Fatty Acids 1994;50(4):173-5. PubMed
  22. Rogers KL, Grice ID, Griffiths LR. Inhibition of platelet aggregation and 5-HT release by extracts of Australian plants used traditionally as headache treatments. Eur J Pharm Sci 2000;9(4):355-63. PubMed
  23. Zhou CC, Huang XX, Gao PY, et al. Two new compounds from Crataegus pinnatifida and their antithrombotic activities. J Asian Nat Prod Res 2014;16(2):169-74.
  24. Palmer KG, Lebin JA, Cronin MT, Mazor SS, Burns RA. Crataegus mexicana (Tejocote) Exposure Associated with Cardiotoxicity and a Falsely Elevated Digoxin Level. J Med Toxicol. 2019;15(4):295-298. PubMed
  25. Espinosa J, Bassett R, Lucerna A, Finn D. Hawthorne root (Crataegus mexicana) toxicity. Am J Emerg Med. 2024;78:242.e5-242.e6. PubMed

See these in context on the Hawthorn 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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