What is the recommended dosage for Astragalus?

General: 250-500 mg standardized extract/day; Traditional: 9-30 g dried root decoction/day

What are the side effects of Astragalus?

Potential side effects include: Generally well tolerated, Mild gastrointestinal effects (bloating, diarrhea) at high doses, Possible interaction with autoimmune conditions (immunostimulatory).

What is astragalus and how does it relate to immune health?

Astragalus (Astragalus membranaceus) is a root used in traditional Chinese medicine for centuries. Its polysaccharides have been studied for their potential to stimulate immune cell activity and support resistance to upper respiratory infections.

What dosage of astragalus has been studied in clinical trials?

Studies have used astragalus root extract at doses of 250–500 mg of standardized extract per day, or 2–6 g of dried root in traditional preparations. Study durations range from 2 weeks to 3 months.

What are the potential side effects of astragalus?

Astragalus is generally considered well tolerated. Rare side effects include mild gastrointestinal symptoms. It may interact with immunosuppressant medications and is typically not recommended for people with autoimmune conditions without medical supervision.

Astragalus

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Also known as: Astragalus membranaceus, Huang Qi, Milk Vetch Root

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About

Astragalus membranaceus (Huang Qi) is a polysaccharide-rich root used in traditional Chinese medicine for over 2,000 years as a foundational immune tonic. It enhances phagocytic activity of macrophages, stimulates T-cell proliferation, and increases antibody production (IgA, IgG, IgM).

How It Works

Polysaccharide-rich root that enhances phagocytic activity of macrophages, stimulates T-cell proliferation, and increases antibody production (IgA, IgG, IgM).

Evidence For Conditions

Condition	Grade	Studies	Participants
Allergic Rhinitis	C	3	200	View →

Side Effects

Generally well tolerated
Mild gastrointestinal effects (bloating, diarrhea) at high doses
Possible interaction with autoimmune conditions (immunostimulatory)

Drug & Supplement Interactions

Immunosuppressant medications (may counteract immunosuppression)
Lithium (may reduce lithium excretion)
Cyclophosphamide (may enhance or interfere with effects)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Andrographis Echinacea Elderberry Garlic Olive Leaf Extract

Quick Facts

Dosage: General: 250-500 mg standardized extract/day; Traditional: 9-30 g dried root decoction/day
Forms: capsule powder tincture decoction
Natural Sources: East Asian legume root (supplement form only)
Upper Limit: No established UL
Best Time: With meals; traditionally used as a preventive tonic (not during acute illness)

Evidence Summary

Allergic Rhinitis C

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.