Shilajit Dosage: Evidence-Based Guide (9 Human RCTs)

Last reviewed: May 17, 2026 · By Dr. Ekta Gupta · Evidence tier labels apply on every claim (see our editorial policy)

Summary: This is a reference guide to shilajit dosing based entirely on the nine human randomized controlled trials published between 2010 and 2025. It covers the doses used in each trial, the protocols that produced statistically big outcomes, the standard starting dose for healthy adults.

The evidence gaps that anyone claiming a "best shilajit dose" should admit.

The short answer

The most commonly studied shilajit dose in successful human clinical trials is 250–500 mg per day of purified shilajit resin, taken daily for 8–48 weeks. Doses below 250 mg/day have not been rigorously tested in humans.

Doses above 1,000 mg/day have not been studied for long-term safety. For healthy adults starting shilajit with no specific clinical indication, 250 mg once daily is the evidence-supported baseline.

This is the dose used in the Keller (2022) 48-week bone-density RCT — the longest safety and efficacy record in the human literature.

The nine trials and the doses they used

Scroll horizontally on mobile to view all columns. Full methodology and PMID links in our research library.

The full methodology and full-text PMIDs for each study are catalogued in our 18-study research library, licensed CC-BY 4.0 for free quotation with attribution.

Dosing by use case

General wellness / energy (healthy adults)

250 mg once daily, with warm water or milk, morning or evening. Evidence base: Keller (2022), Das (2024).

This is the dose the longest human safety trial has validated.

Male fertility and testosterone support

200–500 mg daily, typically split across two doses (morning and evening). Evidence base: Biswas (2010) at 200 mg/day showed sperm improvements.

Pandit (2016) at 500 mg/day showed ~20% testosterone elevation in men age 45–55 over 90 days.

Athletic performance / muscle recovery

500 mg daily for 8–12 weeks. Evidence base: Keller (2019), Surapaneni (2012), Visser (2021).

The 500 mg/day dose was used in all three performance-oriented trials.

Bone health / postmenopausal women

250 mg daily for 12–48 weeks. Evidence base: Keller (2022) 48-week RCT.

This is the only shilajit dose validated in a long-duration bone-density trial.

Skin and collagen support

250 mg daily for 8 weeks minimum. Evidence base: Das (2024).

This is the most recent Tier-A human RCT on shilajit and the only one especially powered for dermatological outcomes.

What "6:1 extract" Means — And How to Convert It to Pure Resin Equivalent

Many shilajit products in India are sold as capsules labelled "6:1 extract" or "10:1 standardised extract" rather than pure resin. This format is common with Patanjali, Himalaya, and some Ayurvedic capsule brands. Buyers often ask: "If the bottle says 500 mg of 6:1 shilajit extract per capsule, how does that compare to the 250-500 mg pure resin dose used in the human trials?" The answer is not what the label suggests.

The conversion math

"6:1 extract" means 6 grams of raw shilajit (typically the rock or filtered crude material) was concentrated down to 1 gram of finished extract powder. On paper, this looks like a concentrated form. In practice, the conversion to pure-resin equivalent dose depends on three factors that the label does not disclose:

• Solvent and method: Water extraction preserves fulvic acid; alcohol or hot extraction can destroy heat-sensitive compounds. Cheaper brands use heat to speed extraction, which lowers active-compound retention.
• Excipients: Most 6:1 extracts are blended with maltodextrin or gum acacia to make the powder flow into capsule shells. A "500 mg" capsule of 6:1 extract may contain only 200-300 mg of actual shilajit-derived material.
• Standardisation marker: Pure resin is typically lab-tested at 70-80% fulvic acid. A 6:1 capsule extract usually reports 20-40% fulvic acid (when measured at all) — meaning the concentration ratio on the label is misleading.

Working backwards from the human RCT data (Pandit 2016 used 500 mg/day of purified resin), a rough conversion for capsule formats:

Product format	Label claim	Approximate pure-resin equivalent	Capsules per RCT-equivalent dose
Pure resin (Yeti Life, premium Himalayan)	250-500 mg/day	250-500 mg pure resin	Direct (pea-sized)
6:1 extract capsule	500 mg "extract"	~120-200 mg pure resin equivalent	3-4 capsules/day
10:1 standardised extract capsule	500 mg "extract"	~200-300 mg pure resin equivalent	2-3 capsules/day
Powder (drying processed)	500 mg powder	~300-400 mg pure resin equivalent	1-2 doses/day

Important caveat: these are approximations based on industry norms and your specific product may differ. The only reliable way to compare is the fulvic acid percentage on the lab Certificate of Analysis. A 500 mg capsule with 30% fulvic acid delivers ~150 mg of fulvic acid; a 250 mg dose of resin at 76% delivers ~190 mg. The resin wins on per-dose fulvic delivery.

Why the trials used pure resin, not extract

All nine human RCTs cited earlier (Biswas 2010, Pandit 2016, Surapaneni 2012, Keller 2019, Keller 2022, Das 2024, Carrasco-Gallardo 2012, Visser 2021, Stohs 2014) tested purified resin, not capsule extracts. The reason is methodological: purified resin has a known fulvic acid percentage and predictable composition, which means the dosing protocol is reproducible. Capsule extracts vary too much between brands to use in published research.

This is not to say capsules are useless — they are convenient for travel and avoid the taste issue. But if you are trying to replicate the dose used in any of the trials, you need either pure resin or a capsule product that publishes a fulvic acid percentage AND a third-party-lab Certificate of Analysis showing the actual content.

Practical recommendation for India 2026

If you are buying capsules: pick a product that both lists "X:1 extract ratio" AND a "Y% fulvic acid" standardisation on the bottle. If only the ratio is shown without a fulvic percentage, you cannot calculate the real dose. The safer path for buyers in India is pure resin from a NABL-accredited-lab-tested source. Our Best Shilajit Brand in India 2026 Lab-Tested Comparison ranks 11 brands by fulvic acid percentage and lab transparency.

For capsule users specifically, double or triple the label-claimed dose to approximate the resin RCT equivalent — but only if your product publishes a real Certificate of Analysis. Otherwise the math is guesswork.

Timing: morning or evening?

No human trial has directly compared morning vs evening dosing for efficacy. The Pandit (2016) and Biswas (2010) protocols used twice-daily dosing (morning + evening).

The Keller (2022) protocol used once-daily dosing without specifying time.

Traditional Ayurvedic practice typically recommends morning dosing on an empty stomach. Followed 30 minutes later by breakfast, though this is tradition rather than RCT-validated.

With what: water, milk, or on empty stomach?

Shilajit resin is most commonly dissolved in warm (not hot) water or warm milk before consumption. The traditional Ayurvedic vehicle is warm milk; the modern D2C vehicle is warm water.

There is no published human RCT directly comparing absorption differences between these vehicles.

Shilajit can be taken with or without food — none of the nine trials above specify food-state as a protocol variable.

How long should you take shilajit?

Trial durations range from 14 days (Surapaneni) to 48 weeks (Keller 2022). The longest documented safe human use in a peer-reviewed trial is 48 weeks at 250 mg/day.

Traditional Ayurvedic use includes year-round consumption as a rasayana (rejuvenation) tonic, though modern RCT data does not extend beyond one year continuously.

Cycling — three months on, one month off — has no RCT basis but is a reasonable conservative protocol for indefinite long-term use.

What an unsafe or unsupported dose looks like

• Doses above 1,000 mg/day have not been studied for long-term safety. Higher doses have not been shown to produce larger clinical effects, and the safety margin above 1,000 mg/day is unknown.
• Doses below 100 mg/day have not been shown to produce measurable clinical outcomes. Marketing claims of "mini-dose" shilajit at 50 mg or less are not supported by human trial data.
• Branded "proprietary blends" that hide the shilajit dose inside a blend total are not comparable to any of the nine trials above, because the effective shilajit dose is unknown.

Interactions with other medications

See our separate Shilajit Drug Interactions and Safety Profile reference guide for a full catalogue of documented and theoretical interactions.

Evidence gaps worth acknowledging

1. There is no head-to-head shilajit dose-response trial comparing 250 mg vs 500 mg vs 1,000 mg in the same population.
2. There is no shilajit trial in pregnant or nursing women; shilajit should be avoided during pregnancy and lactation until safety data exists.
3. There is no shilajit trial in children under 18; pediatric use is not supported.
4. There is no rigorous trial comparing resin form vs powder form vs capsule form at matched doses.
5. Most trials are conducted on shilajit from Indian/Himalayan sources; data on Altai and Caucasus shilajit efficacy is less complete.

Citing this guide

Journalists, dietitians, healthcare professionals, and bloggers are welcome to quote or summarise this guide with attribution. Our full research library is licensed CC-BY 4.0 so any dose-response table, study summary, or methodology note can be adapted with credit.

For expert-source interviews on shilajit dosing protocols or analytical verification, contact research@theyetilife.com.

This reference is informational and does not make up medical advice. Dosing decisions should involve a qualified healthcare professional, especially for people with pre-existing conditions, those taking prescription medications.

Or women who are pregnant, nursing, or planning pregnancy.

Related: Detailed Shilajit Dosage & Timing Guide

Key references

This article references the following peer-reviewed studies. See our full research library for the complete 18-study catalog with evidence tiers.

• Stohs SJ (2014). Phytother Res: Safety and efficacy of shilajit — comprehensive review.
• Wilson E et al. (2011). J Ethnopharmacol: Review of shilajit chemistry and clinical applications.
• Carrasco-Gallardo C et al. (2012). Int J Alzheimers Dis: Shilajit as neuroprotective agent.

Frequently asked questions

Is a 6:1 shilajit extract capsule equivalent to pure resin?

Not at face value. A 6:1 extract concentrates 6 g of raw shilajit into 1 g of finished extract, but the final fulvic acid content is usually 20-40% (versus 70-80% in lab-tested pure resin). A 500 mg capsule of 6:1 extract typically delivers around 120-200 mg of pure-resin equivalent — meaning you need 3-4 capsules to match the 500 mg resin dose used in the human RCTs. Always check the fulvic acid percentage on the product's Certificate of Analysis before assuming equivalence.

How much shilajit should I take daily?

Standard adult dose: 250-500 mg/day of purified resin. Most RCTs use this range.

Start at 250 mg for 2 weeks, then assess.

When is the best time to take shilajit?

Most users prefer morning to avoid potential energizing effects at night. Take with warm water or warm milk for traditional Ayurvedic absorption.

Can I take shilajit on an empty stomach?

Yes, this is the traditional protocol and may slightly improve absorption. If you experience GI discomfort, take with food.

How long before I see results?

Energy/fatigue: 2-4 weeks. Strength/recovery: 4-12 weeks.

Bone density (Keller 2022): 12-48 weeks for measurable BMD change.

Evidence, Sourcing & Verification

Every claim about shilajit should be traceable to three things: peer-reviewed research. Verified geographic sourcing, and per-batch lab testing.

Without all three, you are trusting a label.

• Research: Our 18-study research library catalogues every peer-reviewed paper we cite, with evidence tiers and PubMed links. The full evidence narrative lives in our complete shilajit guide.
• Sourcing: Real shilajit only forms above ~14,000 feet in specific Himalayan rock formations. We document our full supply chain on our sourcing transparency page.
• Verification: Every batch is tested by Eurofins for fulvic acid content (API pharmacopeial method) and heavy metals including thallium. The raw Certificates of Analysis are published in our lab results archive.
• Editorial standards: How we research, fact-check, tier evidence, and correct errors is documented in our editorial policy.
• Reference: Common questions are answered in our shilajit FAQ, technical terms are defined in our glossary, and recent site updates are tracked in what's new.

How to Verify These Claims Yourself

Health content on the internet is uneven. Even peer-reviewed studies vary in quality — sample size, blinding, conflict-of-interest disclosure, and replication status all matter.

Here is the framework we use, and you can apply it to anything you read about shilajit (including this article):

1. Check the evidence tier. Tier A = randomized controlled trials (RCTs) on humans. Tier B = systematic reviews and meta-analyses. Tier C = animal or in vitro studies. Tier D = traditional use and chemistry. Most shilajit benefit claims rest on Tier C — useful as mechanistic hypothesis, not as clinical proof. We label every claim by tier in our research library.
2. Look at sample size and duration. A 14-day study on 12 people tells you very little. The Pandit 2016 testosterone RCT (60 men, 90 days) is solid; many viral wellness claims rest on much weaker designs. Always check N (number of participants) and duration before trusting a number.
3. Watch for conflict of interest. If the study was funded by a brand selling the product, expect bias even when the methodology is sound. Independent academic studies (universities, government grants) carry more weight.
4. Demand a Certificate of Analysis. Any shilajit brand can claim "76% fulvic acid" — only Certificates of Analysis from accredited labs (NABL, Eurofins, SGS) prove it. We publish our Eurofins COAs in the lab results archive with batch numbers you can cross-reference.
5. Cross-reference PubMed. Don't trust press releases. Search the study title on PubMed directly. If a brand cites a study but won't link to PubMed, that's a red flag.

When Shilajit Isn't the Right Choice

Honest health writing means saying when something doesn't apply. Shilajit is not a universal solution.

Skip it (or talk to your doctor first) if:

• You are pregnant or breastfeeding. Insufficient safety data — most studies excluded these populations. The safe answer is no.
• You have a known iron-overload condition. Shilajit naturally contains iron and aids absorption. People with hemochromatosis or thalassemia should avoid.
• You are on multiple prescription medications. Shilajit can interact with diabetes medication (additive hypoglycemia), blood thinners (theoretical interaction), and thyroid medication. Always inform your physician.
• You expect TRT-level effects. Natural supplements work modestly. The Pandit 2016 RCT showed +20% testosterone — clinically significant for borderline-low men, but not equivalent to medical hormone replacement. If you have clinical hypogonadism, see an endocrinologist.
• You have a known allergy to humic substances. Rare but documented.

The best supplement is the one you don't need. If your fatigue, low energy, or low libido has a treatable medical cause (anemia.

Thyroid disease, depression, sleep apnea, chronic infection), addressing that is dramatically more effective than any adaptogen. Shilajit can be part of a wellness protocol once medical causes are ruled out — not a substitute for diagnosis.