Astragalus
adaptogens
Astragalus is a traditional Chinese herb used for centuries to support immune function and overall vitality. Rich in polysaccharides and saponins, it is believed to enhance the body's natural defence mechanisms and promote stress resilience. Modern research suggests potential benefits for energy, longevity, and immune health.
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Benefits
Dosage
Typical Dose
500–1,500 mg daily
Upper Limit
3,000 mg daily
Timing
With meals, split into 2–3 doses
Forms & Bioavailability
Dried root
Traditional form; requires decoction for optimal extraction
Powder
Good bioavailability when mixed with warm water or food
Capsule/tablet
Convenient; bioavailability varies depending on extraction method
Liquid extract
Highest bioavailability; concentrated polysaccharides
Side Effects
Interactions
Research Summary
Clinical studies support astragalus's role in immune enhancement, particularly through increased natural killer cell activity and improved antibody production. Research indicates potential benefits for exercise performance and recovery, though long-term human trials remain limited. Traditional use combined with emerging mechanistic studies suggests promise for immune resilience and healthy ageing, though more rigorous clinical evidence is needed.
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The Bottom Line on Astragalus
Astragalus is well-researched with strong evidence supporting its primary benefits.It is most commonly used for enhanced immune function and increased energy and stamina. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Astragalus
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