Astragalus (Astragalus membranaceus)
What it is
A well-studied traditional Chinese herb with modern immunological evidence. A 2024 review found it significantly improves immune cell counts alongside conventional treatment for respiratory infections and cancer. Contains active compounds called astragalosides. Has centuries of safe traditional use. Avoid if taking immunosuppressant drugs, as it may reduce their effectiveness.
Dose
500–1,000 mg/day standardised extract (0.4–0.5% astragaloside IV); avoid with immunosuppressants
Time of day & tips
Take with food at any time of day. Avoid combining with immunosuppressant drugs — it may reduce their effectiveness. No other major drug interactions at standard doses.
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