Hawthorn (Crataegus) berries, leaves, and flowers are rich in oligomeric proanthocyanidins (OPCs) and flavonoids. It is considered a premier cardiovascular herb, often found in supplements targeting hypertension, blood flow, and aging cardiovascular systems.
Clinical Summary
Extensive research, particularly in Europe, supports its use for mild to moderate heart failure (NYHA stages I and II) and for improving exercise tolerance by increasing coronary artery blood flow.
Dosage Guidelines
160-900mg of extract daily, usually divided into two doses. Requires 4-8 weeks of consistent use for noticeable benefits.
Safety & Side Effects
Very rare, but may include mild dizziness, nausea, or palpitations.
Known Interactions
Significant potential for interactions with cardiovascular drugs, including beta-blockers, calcium channel blockers, and digoxin. Must be used with caution if on heart medication.
Medical Disclaimer
The information provided in this clinical review is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.
*These statements have not been evaluated by the Food and Drug Administration (FDA). This product or ingredient is not intended to diagnose, treat, cure, or prevent any disease.
Always consult your physician or other qualified health provider with any questions you may have regarding a medical condition, or before beginning any new diet, fitness, supplement, or treatment regimen, especially if you have pre-existing medical conditions or are taking prescribed medications.