Astragalus
A central TCM tonic herb with strong immune-support and emerging telomere / longevity research (Astragaloside IV / TA-65).
Moderate for immune support (reduced cold incidence and duration), congestive heart failure adjunct (improved ejection fraction in Chinese trials), and chemotherapy adjunct (reduced side effects, immune support). TA-65 telomere lengthening shown in small human trials. Effects: 4–12 weeks.
Astragalus membranaceus is one of the most-used herbs in TCM, classified as a 'qi tonic' — building energy and supporting immunity. Modern research has focused on its polysaccharides (immune modulation) and astragalosides — particularly astragaloside IV, which appears to activate telomerase (the enzyme that maintains chromosome end-caps). The branded form TA-65 is concentrated astragaloside IV and is one of the few commercial telomerase activators with human research. Outside the longevity angle, astragalus is a solid immune-support herb with cardiac and renal-protective effects.
- Form
- Astragalus root extract standardised to polysaccharides and/or astragalosides. TA-65 — concentrated astragaloside IV, much more expensive. Astragalus root in TCM herb shops for traditional decoction.
- Dose
- Root extract: 500–1,500 mg/day. TA-65: per manufacturer (typically 1–8 mg/day).
- Timing
- Anytime with food. AM common.
- Schedule
- Daily. Cycle (3 months on / 1 off) optional.
- Side effects
- Generally very well-tolerated. Mild GI upset, skin reactions rare.
- Interactions
- Immunosuppressants — astragalus is immune-stimulating; opposing action. Anticoagulants — mild additive. Lithium — astragalus is mildly diuretic; can affect lithium levels.
- Contraindications
- Active autoimmune disease (immune-stimulating effect can flare). On immunosuppressants (organ transplant). Acute infection at presentation (theoretical concern with immune stimulation during sepsis). Pregnancy / breastfeeding.
- Lab markers
- Not standard. Immune panels in research contexts. Telomere length (specialty labs — Life Length, Repeat Diagnostics) for TA-65 users.
- Food sources
- Astragalus root is added to TCM soups and tonics — long-simmered then removed. The root itself is fibrous and not eaten.
Pairs with
Reishi, turkey tail (immune mushroom blend). Eleuthero, ginseng (adaptogen stack). Vitamin C, zinc (immune cofactors).
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