Shilajit and Astragalus: Natural Allies for Supporting Kidney Function

Your kidneys are more than just fluid filters—they're the silent backup system for detoxification, working alongside the liver to remove waste, balance minerals, and maintain blood pressure.  When the liver is overloaded or when the body faces chronic inflammation, the kidneys take on a greater burden.

As interest grows in natural approaches to kidney health, two powerful botanicals—Shilajit and Astragalus membranaceus—have emerged as promising tools to support renal function.  But like all powerful natural agents, their use should be guided by knowledge, not guesswork.

The Kidney–Liver Connection: Detoxification’s Second Line

The liver is the body's primary detoxifier, neutralizing toxins and converting fat-soluble waste into water-soluble compounds . These compounds are then excreted by the kidneys.  When the liver is overburdened (due to alcohol, medications, infections, or poor diet), the kidneys must work harder.

The kidneys also play critical roles in:

• Regulating fluid and electrolyte balance

• Producing erythropoietin for red blood cell formation

• Activating vitamin D

• Clearing metabolic by-products like urea and creatinine

Supporting renal function, especially in early-stage dysfunction or under chronic detox load, is vital for long-term resilience.

1. Astragalus: A Time-Tested Kidney Tonic

Astragalus membranaceus has been used in Traditional Chinese Medicine (TCM) for centuries to support:

• Immune function

• Adaptation to stress

• Cardiovascular and renal function

Evidence for Kidney Support:

• A 2020 systematic review and meta-analysis found that Astragalus significantly improved eGFR and reduced serum creatinine in patients with chronic kidney disease (CKD) stages 1–3.

Reference: Zhang L, et al. Phytother Res. 2020;34(10):2451–2460.

• Astragalus has been shown to reduce proteinuria, protect podocytes (filtration cells), and modulate inflammatory cytokines involved in renal fibrosis.

Dosage range typically used in clinical studies: 15–30g/day dried root equivalent (capsules or decoction), adjusted for extract concentration.

2. Shilajit: Mineral-Rich Resin with Mitochondrial and Renal Benefits

Shilajit is a naturally occurring mineral pitch found in the Himalayas, rich in fulvic acid, trace minerals, and dibenzo-α-pyrones, which support:

• Mitochondrial energy production

• Detoxification pathways

• Heavy metal chelation

• Antioxidant protection

Kidney-Specific Findings:

• In preclinical models, Shilajit has shown renoprotective effects by:

  • Reducing oxidative stress in renal tissue

  • Preserving glomerular filtration

  • Supporting the detoxification of nephrotoxic agents (e.g., gentamicin)

Note: High-quality, purified Shilajit is essential. Raw or contaminated products may contain heavy metals and be harmful to the kidneys.

Monitoring Kidney Function: Safety First

While both Astragalus and Shilajit show promise in supporting kidney function, monitoring is essential, particularly in those with pre-existing kidney conditions.

Recommended tests during use:

• Creatinine: To assess filtration and waste clearance

• eGFR: Estimates glomerular filtration rate and overall kidney function

• Electrolytes (Na, K, Mg, Ca, P): To detect imbalances during supplementation

Monitoring every 4–8 weeks is prudent during sustained use.

When to Use Caution

• In advanced kidney disease (eGFR <30), use only under clinical supervision

• Avoid raw or non-standardized Shilajit products

• Discontinue if creatinine or potassium levels rise unexpectedly

Conclusion: Natural Support, Scientifically Informed

Astragalus and Shilajit are more than traditional tonics—they are evidence-informed allies in kidney health. When used carefully and monitored appropriately, they may:

• Improve eGFR and creatinine

• Reduce inflammation and oxidative stress

• Enhance the body's ability to adapt to detoxification demands

Always consult a practitioner trained in integrative care before starting herbal protocols, especially if you're managing chronic illness or taking medications.

Interested in a monitored, natural approach to supporting your kidney health?

Contact us to learn about our functional kidney protocols using plant-based support.

Dr D Michael Elliott M.S. D.C. CFMP