Hawthorn Berry Extract
What this compound does
Hawthorn berry extract is a natural supplement used to support heart health. It helps the heart muscle pump more efficiently by improving the way heart cells use calcium. It also relaxes blood vessels, making it easier for blood to flow and reducing strain on the heart. The antioxidants in hawthorn may protect the heart from damage.
- • Adults with mild heart failure (NYHA class II)
- • People looking for natural cardiovascular support
- • Those with occasional chest tightness or palpitations
Improvements in energy and exercise tolerance may be noticed within 2-4 weeks, but optimal benefits for heart health typically require 8-12 weeks of consistent use.
- • Pregnant or breastfeeding women
- • People taking heart medications like digoxin or beta-blockers (consult doctor)
- • Individuals with very low blood pressure
Production details below.
How much, when
Peer-reviewed studies
- PMID: 18614993A
Improves heart failure symptoms
Meta-analysis of 10 RCTs (855 patients) showed significant improvement in exercise tolerance and symptoms like dyspnea and fatigue over 8-16 weeks.
- PMID: 17222450B
Reduces blood pressure
A 12-week RCT in 92 patients with mild hypertension found 500 mg/day hawthorn extract reduced systolic BP by 10 mmHg vs placebo.
- PMID: 12824800B
Lowers cholesterol
A 16-week RCT in 120 patients showed hawthorn extract (1200 mg/day) reduced total cholesterol by 8% and LDL by 11%.
- PMID: 15014897B
Improves exercise tolerance
A 8-week RCT (40 patients with NYHA class II heart failure) found hawthorn extract increased treadmill walking time by 25%.
- ReviewC
Antioxidant activity
In vitro and in vivo studies confirm hawthorn flavonoids increase plasma antioxidant capacity and reduce oxidative stress markers.
- PMID: 22118293A
Moderate safety profile
Systematic review of 24 clinical trials reported mild, transient adverse events (GI upset, dizziness) in <5% of participants.
- PMID 23747774 · 2013Clinical StudyB
Cardiotonic modulation in heart failure: insights from traditional Chinese medicine
- PMID 40573097 · 2025RCTB
Effects of Hawthorn Fruit Supplementation on Facial Skin Phenotypes and Leukocyte Telomere Length Stratified by TERT Polymorphisms
- PMID 30068354 · 2018Narrative ReviewB
ISSN exercise & sports nutrition review update: research & recommendations
Medicine interactions
- HIGH
Digoxin· cardiac_glycoside
Hawthorn may increase digoxin serum levels and potentiate its effects, risk of toxicity.
→ Avoid concomitant use; monitor digoxin levels if combined.
- MODERATE
Blood pressure medications (e.g., ACE inhibitors)· antihypertensive
Additive vasodilation may lower blood pressure further.
→ Monitor blood pressure; adjust antihypertensive as needed.
- MODERATE
Beta-blockers (e.g., metoprolol)· beta_blocker
Additive negative chronotropic effects may cause bradycardia.
→ Monitor heart rate; adjust beta-blocker dose if needed.
- LOW
Warfarin· anticoagulant
Hawthorn may have mild antiplatelet effects; theoretical INR increase.
→ Monitor INR if combined; no major interactions reported in studies.
This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.