Hawthorn Leaf Flower (Crataegus laevigata): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does hawthorn leaf and flower work on the heart?

Hawthorn leaf and flower contains flavonoids including hyperoside, vitexin, vitexin-2-rhamnoside, and procyanidins that exert cardioprotective effects through multiple mechanisms. These compounds improve coronary blood flow, enhance myocardial contractility, and provide antioxidant protection to cardiac tissue. The flavonoids also dilate blood vessels, reducing peripheral resistance and cardiac workload. Evidence Level A supports these mechanisms in mild cardiac conditions.

Can I take hawthorn with blood pressure medication or digoxin?

Hawthorn should not be combined with digoxin due to potential additive cardiac effects that may alter heart rhythm and medication efficacy. Concurrent use with antihypertensive medications may cause additive blood pressure lowering, potentially leading to hypotension. Patients taking these medications should consult a healthcare provider before using hawthorn. Medical supervision is essential when managing concurrent herbal and pharmaceutical treatments.

What is the recommended daily dosage for hawthorn leaf and flower extract?

The standard adult dosage for hawthorn leaf and flower extract is 160-900mg daily of a standardized preparation containing either 1.8% vitexin-2-rhamnoside or 10% procyanidins. Lower doses may be used initially and gradually increased as tolerated. Standardized extracts ensure consistent flavonoid content. Consult a qualified healthcare practitioner for personalized dosing, especially when addressing specific cardiovascular concerns.

Is hawthorn leaf and flower safe during pregnancy?

Hawthorn leaf and flower is considered unsafe during pregnancy and should be avoided. Large doses may stimulate uterine contractions and affect fetal circulation. The herb's cardiovascular effects could potentially impact both maternal and fetal health. Pregnant individuals should not use hawthorn preparations. Women who are breastfeeding should also avoid hawthorn due to insufficient safety data.

What is hawthorn leaf and flower used for medicinally?

Hawthorn leaf and flower is primarily used as a cardiac tonic for mild heart conditions, including mild heart weakness and reduced cardiac function. It supports healthy blood pressure levels and may help prevent atherosclerosis. The herb is also traditionally used for anxiety accompanied by heart palpitations. Evidence Level A supports its use for mild cardiac conditions. Leaf and flower preparations contain higher flavonoid concentrations than berries.

What are the side effects of hawthorn leaf and flower?

Hawthorn leaf and flower is generally well-tolerated at recommended doses. Potential side effects include nausea, dizziness, and headache. Excessive use may cause palpitations or cardiac arrhythmias. Allergic reactions are rare but possible. Side effects typically resolve when the herb is discontinued. Start with lower doses to assess tolerance and consult a healthcare provider if adverse effects persist.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 26 PubMed articles · model: gemma4:31b

Summary

Crataegus laevigata is a medicinal plant used primarily for cardiovascular support and the treatment of heart failure [PMID:21242072, PMID:18254076].

Background

Crataegus laevigata, also known as midland hawthorn, is a species of the Rosaceae family [PMID:21359265, PMID:33562140]. It is commonly utilized in herbal medicine as a leaf and flower drug (LFD) or as extracts from its berries [PMID:17706370, PMID:18698794].

Traditional uses

Traditionally applied as a cardiotonic and used in the treatment of chronic heart failure, high blood pressure, arrhythmia, various digestive ailments, and as a geriatric and antiarteriosclerosis remedy [PMID:39598401, PMID:18698794].

Active compounds

Key bioactive compounds include flavonoids (hyperoside, vitexin-2''-O-rhamnoside, vitexin, isovitexin, rutin), phenolic acids (chlorogenic acid, protocatechuic acid), and oligomeric/polymeric procyanidins composed of (-)-epicatechin units [PMID:32138258, PMID:12822932, PMID:12150807, PMID:16426620, PMID:27776376].

Mechanism of action

In vitro evidence suggests the extract inhibits human neutrophil functions by suppressing FMLP-induced superoxide anion generation, elastase release, and chemotactic migration, as well as reducing TNF-alpha and interleukin-8 [PMID:18547815]. In keratinocytes, it suppresses LPS-induced oxidative stress by regulating MAPKs/AP-1, NF-κB, and NFAT signaling pathways [PMID:33562140].

Clinical evidence

Evidence AChronic Heart Failure

The German Commission E approved extracts of hawthorn leaf with flower for heart failure graded stage II (NYHA), though systematic reviews assess the benefits and harms of these extracts compared to placebo [PMID:18254076]

Evidence BHypertension (in Type 2 Diabetes)

A randomized controlled trial of 1200 mg daily hawthorn extract for 16 weeks showed a significant group difference in mean diastolic blood pressure [PMID:16762125]

Evidence BCoronary Heart Disease (CHD) Biomarkers

In diabetic subjects with chronic CHD, a micronized flower and leaf preparation (400 mg three times daily) significantly decreased neutrophil elastase (NE) over 6 months [PMID:21242072]

Evidence BStress and Cognition

A supplement containing C. laevigata fruits, S. baicalensis, magnesium, and chromium significantly improved performance on tasks of attention and working memory in stressed adults [PMID:41194549]

Safety & adverse effects

Crataegus-containing products are generally considered safe and are associated at most with minor and atypical adverse reactions [PMID:39598401].

Evidence summary

Evidence ranges from high-level systematic reviews for heart failure to individual randomized controlled trials for hypertension and cognitive support, with additional supporting in vitro and animal model data.

PubMed sources

1.PMID: 41194549 (2025) — Effects of a Scutellaria baicalensis/Crataegus laevigata, magnesium and chromium supplement on stressed individuals: A randomised, double-blind, placebo-controlled, crossover trial. · Journal of psychopharmacology (Oxford, England)
2.PMID: 32138258 (2020) — Assessment of Antioxidants in Selected Plant Rootstocks. · Antioxidants (Basel, Switzerland)
3.PMID: 18254076 (2008) — Hawthorn extract for treating chronic heart failure. · The Cochrane database of systematic reviews
4.PMID: 37176893 (2023) — Flowers and Inflorescences of Selected Medicinal Plants as a Source of Triterpenoids and Phytosterols. · Plants (Basel, Switzerland)
5.PMID: 21242072 (2011) — Crataegus laevigata decreases neutrophil elastase and has hypolipidemic effect: a randomized, double-blind, placebo-controlled trial.

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Sources & Citations

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Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources

Hawthorn Leaf Flower

Sources & Citations

Calculate a safe dose of Hawthorn Leaf Flower

Related Herbs

Hawthorn Leaf Flower Berry

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Garlic

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources