Arjun (Terminalia arjuna)
Overview
Arjun is an evergreen tree that can grow up to about 100 ft (30 m) high, bearing pale yellow flowers and cone-shaped leaves. Its bark has a longstanding reputation in Ayurvedic medicine—used for at least 3,000 years—as a primary heart remedy. Traditional texts report its effectiveness in angina, congestive heart failure, and poor coronary circulation, with modern research suggesting it helps reduce blood cholesterol and may stabilize heart rhythms.
Traditional uses & properties
Cardiac Tonic & Vasodilator: Supports heart function, improving circulation, reducing angina symptoms, and possibly regulating heart rate and rhythm. Hypotensive: Can help lower blood pressure, though research results have varied. Cholesterol-Lowering: Shown in some studies to reduce blood cholesterol levels. Ayurvedic Use: Employed traditionally for edema associated with heart failure, as well as bile duct problems, certain poisonings, and scorpion stings. It is also part of some preparations for asthma and digestive disorders.
Preparations & dosage
Decoction made from dried bark can be used to treat poor circulation to the heart.
Safety & precautions
Not recommended during pregnancy unless supervised by a qualified healthcare professional. Owing to conflicting research on how it affects blood pressure and heart rate, it should be taken only with professional guidance.
Drug & food interactions
Arjuna appears to have some effects on cardiovascular function, which may lead to interactions with conventional drugs used for similar indications. However, if anything, these interactions may be beneficial. Arjuna may also affect thyroid function, which could alter the control of both hyperand hypothyroidism.
The interaction between arjuna and thyroid or antithyroid drugs is based on experimental evidence only. No interactions found.
No interactions found.
Arjuna appears to have some effects on cardiovascular function that may be of benefit when given with conventional cardiovascular drugs. The effect of arjuna on angina pectoris, congestive heart failure, left ventricular mass and hyperlipidaemia has been investigated in a number of small studies in patients with various cardiovascular disorders (these have been the subject of a review1). In some of these studies, patients were also taking conventional drugs. For example, in one double-blind, crossover study in 58 patients with stable angina, the addition of powdered stem bark extract (500 mg every 8 hours) for one week decreased the number of angina episodes and the need for nitrate therapy during episodes of angina (about 5.7 mg/ week versus 18.2 mg/week with placebo).2 In another double-blind crossover study in patients with refractory congestive heart failure, the addition of bark extract 500 mg every 8 hours for 2 weeks to conventional therapy (digoxin, maximally tolerated furosemide and spironolactone, vasodilators; ACE inhibitors, nifedipine or nitrates) led to improvements in signs and symptoms of heart failure. This improvement was maintained over long-term evaluation in an open phase, when patients continued the bark extract at the same dosage. The only notable adverse effect was a rise in serum potassium (from about 3.8 to 4.3 mmol/L).3 Another randomised, placebo-controlled study in patients with coronary heart disease found that adding arjuna bark powder 500 mg daily to existing medication decreased lipid peroxide levels (a marker of atherosclerosis) and caused a significant decrease in cholesterol levels.
No interactions found.
Habitat
Found across much of the Indian subcontinent, from Sri Lanka to the foothills of the Himalayas, arjun thrives in damp, marshy areas, often near riverbanks. It is grown from seed, and the bark is harvested in late winter. The bark is then processed into powdered form, decoctions, or tinctures.
Traditionally used for
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