Common Hawthorn for Health & Longevity - Quick Reference Sheet
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Common Hawthorn for Health & Longevity

Created on 08/16/2026 – Quick Reference based on Evidence Review created using AI4L / Grok 4.5 – Audit

Leaf-and-flower extracts have been studied mainly as an add-on for mild heart weakness and, in smaller work, blood pressure. Older trials reported better exercise tolerance and fewer symptoms; later work on modern heart-failure drugs found no clear drop in major heart events, one found earlier worsening. Not a longevity drug or replacement for pressure control, training, sleep, or heart-failure medicines. (Full Review)

Protocol

Leading extract
WS 1442
Dry leaf-with-flower extract, ethanol 45%, 17.3–20.1% oligomeric procyanidins; main alternative LI 132
Usual studied daily amount
600–900 mg/day
WS 1442-type extract; trial range 160–1,800 mg/day; lower start 300–450 mg/day
Split doses
Two or three oral doses with meals
Morning and evening, and mid-day if three times daily
Time to effect
Heart-failure symptoms
6–8 weeks
Symptom and pressure changes, when they occur, are usually assessed then
Blood pressure
6–8 weeks
Pressure changes, when present, are usually judged at 6–8 weeks
Blood lipid reduction
6 months
Within-group LDL change was assessed at 6 months; between-group difference was not significant

Benefits

Contraindications
  • Known allergy to the rose family (Rosaceae)
  • Pregnancy or lactation (human data are insufficient)
  • Acute decompensated heart failure or New York Heart Association class IV symptoms (symptoms at rest)
  • Recent myocardial infarction (heart attack), typically within 90 days
  • Children and adolescents
  • Planned major surgery within two weeks
    •
Key Interactions
  • Antihypertensive drugs (lisinopril, losartan, amlodipine, metoprolol)
  • Nitrates (nitroglycerin, isosorbide mononitrate)
  • PDE5 inhibitors (sildenafil, tadalafil)
  • Digoxin
  • Antiarrhythmics (amiodarone, flecainide)
  • Anticoagulants and antiplatelet drugs (warfarin, clopidogrel, aspirin)
  • Other pressure-lowering supplements (garlic, hibiscus, beetroot, magnesium, CoQ10 / coenzyme Q10, L-arginine)
  • Calming herbs (valerian, passionflower)
    •

Risk & Side Effects

  • High: [risks_high]
    •
  • Medium: Dizziness and lightheadedness; Digestive upset
    •
  • Low: Early heart-failure progression; Palpitations; Headache; Rash; Increased bleeding tendency
    •
  • Speculative: Shared heart-muscle effect with digoxin; Liver injury
    •

Monitoring

Marker Target Why
Seated systolic / diastolic blood pressure 110–120 / 70–80 mmHg Tracks the intended pressure effect and additive hypotension
Standing systolic blood pressure Drop <10 mmHg from seated, no symptoms Detects orthostatic dizziness from vasodilation
Resting heart rate 55–70 beats/min Flags excessive slowing when used together with beta blockers
Morning weight Stable versus the person's own 7-day baseline Early fluid gain is how worsening often shows
NT-proBNP As low as possible; no single "optimal" hawthorn target Confirms that add-on use is not quietly worsening wall stretch
Left-ventricular ejection fraction ≥55% if previously normal; otherwise track change from the person's own baseline Places the user relative to the ≤35% ejection-fraction subgroup
ALT <25–30 U/L (functional); conventional often <40–55 U/L Optional liver-safety check if other liver-stressing agents are used

Cadence: Home pressure and standing symptoms at 2 weeks and 4 weeks, then a fuller set at 8–12 weeks; if continued, every 3–6 months or sooner after any change in blood-pressure or heart-failure drugs

Qualitative Assessment

  • Breathlessness on a familiar flight of stairs or walk
  • Energy and afternoon fatigue
  • Ankle swelling or tighter shoes
  • Lightheadedness on standing
  • Palpitations
  • Sleep continuity after evening doses
Not medical advice. Educational distillation of a single evidence review. Confirm any decision with a qualified clinician, especially in the presence of prescription drugs or chronic conditions.