- Shilajit is a tar-like mineral exudate ("mineral pitch," mumijo) that seeps from Himalayan and other high-mountain rock, rich in fulvic acid and dibenzo-α-pyrones plus trace minerals; it is sold as raw resin, purified/standardized resin (e.g., PrimaVie/Natreon), powder, and capsules (Pandit 2016, Andrologia).
- The independent human-testosterone evidence is one small 90-day RCT in 45–55-year-old healthy men: purified shilajit 250 mg twice daily significantly raised total testosterone, free testosterone, and DHEAS versus placebo (p<0.05), with LH/FSH maintained (Pandit 2016, Andrologia).
- The viral "energy and performance" claims lean on a 28-day, single-arm, no-placebo, manufacturer-run pilot (Amaara Botanicals) — not independent, controlled evidence (Yadav 2026, Cureus).
- The dominant safety issue is heavy-metal contamination. Because shilajit forms in rock, raw/unpurified products can carry lead, arsenic, mercury, and cadmium; the FDA has separately warned about heavy-metal poisoning tied to unapproved Ayurvedic products (FDA Ayurvedic heavy-metal warning; NCCIH via secondary summary).
- Shilajit is not FDA-approved as a drug and has no GRAS status for a defined ingredient; it is sold only as an unregulated dietary supplement with buyer-beware quality variation (FDA Ayurvedic heavy-metal warning).
- Overall evidence grade: Weak for testosterone (one small independent RCT); Insufficient for energy/performance; safety caveat dominates the picture.
Table of contents
- Evidence summary
- What shilajit is
- All forms and grades
- How it works
- The hype vs the evidence
- Benefits by claim
- What works and what does not
- Risks and all side effects
- All interactions
- Who should avoid shilajit
- Dosage and how to take
- Animal and in-vitro evidence excluded
- Independent funding and conflict notes
- Frequently asked questions
- Sources and funding notes
| Claim | Evidence | Source | Funding/conflict | Strength |
|---|---|---|---|---|
| Purified shilajit raises total testosterone, free testosterone, and DHEAS in healthy older men | 90-day RCT, 250 mg twice daily vs placebo, healthy men aged 45–55; p<0.05 for testosterone/DHEAS; LH/FSH maintained | Pandit 2016, Andrologia | Academic/government Ayurvedic college (West Bengal); underlying extract likely a Natreon/PrimaVie-type standardized material — funding not fully disclosed in available summary | Weak (single small RCT) |
| Shilajit improves strength, endurance, VO₂max, fatigue, and inflammation markers | 28-day open-label, single-arm pilot, n=25, no placebo/control; leg-press 1RM +12.9%, Fatigue Severity −32%, CRP −25% | Yadav 2026, Cureus | Conflicted — authors affiliated with Amaara Botanicals Pvt Ltd, the maker of the tested "TruBlk" product; uncontrolled design | Insufficient (industry, uncontrolled) |
| Shilajit is a general "male vitality" / testosterone booster for all men, as marketed virally | Not supported by the available evidence base — only one small independent RCT exists | HerbVerdict scorecard | Independent evidence aggregator commentary | Weak |
| Raw/unpurified shilajit carries a meaningful heavy-metal contamination risk | Documented contamination concern; shilajit forms within mountain rock and can absorb lead, arsenic, mercury, cadmium | NCCIH via secondary summary; FDA Ayurvedic heavy-metal warning | Independent regulator/government health-research body | Strong (safety concern, well documented) |
| Stacking shilajit with Tongkat Ali produces amplified "T-boosting" results, as promoted on social media | No dedicated combination RCT identified; each ingredient's own human evidence is separately modest/weak | Kings Supplements stack protocol | Commercial/retailer content, not a clinical source | Insufficient |
What shilajit is
Shilajit is a sticky, tar-like exudate that seeps out of layered rock in high-mountain ranges, most famously the Himalayas, formed over long periods from the slow decomposition of plant matter compressed under rock. It has been used for centuries in traditional Ayurvedic medicine as a general tonic ("rasayana"), and it is chemically characterized mainly by its high content of fulvic acid and dibenzo-α-pyrones, along with a broad spectrum of trace minerals absorbed from the surrounding rock (Pandit 2016, Andrologia). The modern supplement industry sells shilajit in raw and purified forms, with quality and contaminant load varying enormously depending on sourcing and processing. This variability is central to the story: "shilajit" is not a single standardized substance any more than "herbal extract" is, and the difference between a laboratory-purified, standardized resin and an untested raw scrape sold online is the difference between a studied ingredient and an unknown one.
Current viral marketing frames shilajit as a "male vitality" mineral pitch capable of raising testosterone, boosting energy, and improving performance — a narrative that has spread heavily on TikTok and is frequently stacked in protocols alongside Tongkat Ali (Kings Supplements stack protocol). As detailed below, the actual human clinical evidence supporting these claims is thin: essentially one small independent randomized trial, surrounded by uncontrolled industry pilots and a serious, well-documented heavy-metal safety concern.
All forms and grades
Shilajit reaches consumers in several forms that differ sharply in purification, standardization, and the quality of evidence and safety assurance behind them.
| Form | Description | Standardization | Evidence/quality notes |
|---|---|---|---|
| Raw/unpurified resin ("mineral pitch") | Sold close to its natural state as scraped from Himalayan or other mountain rock; softens with body heat | None — composition and contaminant load are unverified and highly variable | Highest heavy-metal contamination risk; no controlled human trials use this exact form (NCCIH via secondary summary) |
| Purified/standardized resin (e.g., PrimaVie, Natreon-brand extracts) | Processed and purified proprietary extracts standardized to marker compounds | Standardized to fulvic acid and dibenzo-α-pyrone content | This category of extract underlies the one independent testosterone RCT (Pandit 2016, Andrologia); purification reduces (but does not guarantee elimination of) contamination risk |
| Powder | Dried/ground resin, sometimes encapsulated or dissolved in liquid | Variable; often not independently standardized | Quality depends entirely on sourcing and third-party testing disclosure |
| Capsules/tablets | Purified extract or powder in capsule form for convenience and dosing consistency | Variable; best when the label states a named standardized extract | Preferred format for consistent, testable dosing when third-party tested |
| Branded proprietary blends (e.g., "TruBlk" resin) | Manufacturer-specific formulations marketed for performance/energy | Company-defined | Underlies the uncontrolled, manufacturer-run pilot rather than independent RCT evidence (Yadav 2026, Cureus) |
How it works
The proposed mechanisms behind shilajit's effects center on its two signature components: fulvic acid, a complex organic acid thought to act as a carrier molecule and antioxidant that may aid mineral transport and cellular energy processes, and dibenzo-α-pyrones, plant-derived compounds proposed to have antioxidant and mitochondrial-support properties, alongside a broad trace-mineral content (Pandit 2016, Andrologia). In the one independent human RCT, purified shilajit raised total and free testosterone alongside DHEAS while maintaining LH and FSH levels — a pattern the study's authors interpret as consistent with support for endogenous steroidogenesis rather than exogenous hormone-like activity, though the RCT itself did not establish the underlying cellular mechanism (Pandit 2016, Andrologia).
Important limitation: the deeper mechanistic story — mitochondrial biogenesis, cellular energy production, and antioxidant signaling attributed to fulvic acid and dibenzo-α-pyrones — is largely built on animal and preclinical research, not human mechanistic trials. No qualifying in-vitro or animal mechanistic source from the underlying research file met this article's bar for inclusion (full human-context replication), so no such mechanistic data is presented here; readers should treat any "mitochondrial booster" or "cellular energy" language seen in marketing as extrapolation beyond what the single human RCT actually measured (hormone levels only, not mitochondrial function).
The hype vs the evidence
The viral claim, amplified across TikTok and biohacker/male-wellness content often stacking shilajit with Tongkat Ali, is that shilajit is a potent natural testosterone booster that restores "male vitality" and energy (Kings Supplements stack protocol). The human evidence supporting this is far narrower than the marketing suggests:
- Testosterone: One randomized, placebo-controlled trial in healthy men aged 45–55 gave purified shilajit 250 mg twice daily (500 mg/day total) for 90 days and found statistically significant increases in total testosterone, free testosterone, and DHEAS versus placebo (p<0.05), with LH and FSH maintained within normal range (Pandit 2016, Andrologia). This is a real, independent signal — but it is a single small trial, not a replicated body of evidence, and it was conducted in older healthy men, not the younger demographic most targeted by viral marketing.
- Energy/performance: The most commonly cited "performance" data point is a 28-day open-label pilot in 25 people using a branded resin ("TruBlk"), reporting gains in leg-press one-rep max (+12.9%), endurance, VO₂max, and reductions in Fatigue Severity Scale score (−32%) and CRP (−25%). This study had no control or placebo arm and its authors are affiliated with Amaara Botanicals Pvt Ltd, the company that makes the tested product — a direct conflict of interest that, combined with the uncontrolled design, means it cannot support a causal performance claim (Yadav 2026, Cureus).
Put plainly: the independent evidence base for shilajit's headline claim is one small RCT showing a hormonal signal in older men, and nothing independently controlled on energy, strength, or "vitality" more broadly. An independent scorecard summarizing the herb's overall evidence base similarly concludes the marketing intensity around shilajit outruns what has actually been tested (HerbVerdict scorecard).
Benefits by claim
Testosterone and hormonal markers
The Pandit 2016 RCT, published in Andrologia and run out of a government-affiliated Ayurvedic college in West Bengal, remains the only independent, placebo-controlled human trial behind the testosterone claim. Purified shilajit at 250 mg twice daily for 90 days significantly increased total testosterone, free testosterone, and DHEAS relative to placebo (p<0.05), while luteinizing hormone (LH) and follicle-stimulating hormone (FSH) remained stable, suggesting the effect did not come at the cost of disrupting the hypothalamic-pituitary-gonadal feedback loop (Pandit 2016, Andrologia). Independence: Independent (academic/government institution). Credibility: Weak-to-moderate — a real, statistically significant, plausible-mechanism finding, but from a single small trial that has not been independently replicated, in a narrow age band (45–55 years), and without full transparency on the exact commercial extract or its funding in publicly available summaries.
Energy, fatigue, and physical performance
The only available data on strength, endurance, and fatigue comes from a 28-day, single-arm, open-label pilot in 25 participants using a specific branded shilajit resin, with no placebo or control group. Reported changes included a 12.9% increase in leg-press one-rep max, improved endurance and VO₂max, a 32% drop in Fatigue Severity Scale scores, and a 25% reduction in CRP (an inflammation marker) (Yadav 2026, Cureus). Independence: Conflicted — study authors are affiliated with Amaara Botanicals Pvt Ltd, the manufacturer of the tested product. Credibility: Insufficient for any performance claim: without a control group, improvements cannot be distinguished from placebo effect, natural fluctuation, or regression to the mean, and the sponsor relationship is a direct conflict of interest.
General "vitality" and libido
No independent, controlled human trial in the available evidence base directly measured libido, mood, or the broad "vitality" framing used in viral marketing. The testosterone RCT measured hormone levels only, not subjective vitality, sexual function, or libido outcomes (Pandit 2016, Andrologia). This claim area is therefore graded Insufficient — it is inferred by marketers from the testosterone finding rather than directly tested.
What works and what does not
| Claim | Verdict | Evidence basis |
|---|---|---|
| Purified shilajit raises testosterone/DHEAS in healthy older men over 90 days | Supported by one small independent RCT; not yet replicated | Pandit 2016, Andrologia |
| Shilajit improves strength, VO₂max, and reduces fatigue/inflammation | Not established — only uncontrolled, manufacturer-run pilot data exists | Yadav 2026, Cureus |
| Shilajit is a broadly effective "male vitality" booster for men of all ages | Not supported — evidence base is one narrow-population RCT plus conflicted pilots | HerbVerdict scorecard |
| Stacking shilajit with Tongkat Ali amplifies testosterone/vitality effects | Not supported — no dedicated combination trial identified | Kings Supplements stack protocol |
| Raw/unpurified shilajit is as safe as purified, standardized resin | Not supported — raw material carries materially higher contamination risk | NCCIH via secondary summary; FDA Ayurvedic heavy-metal warning |
Risks and all side effects
| Risk/side effect | Frequency/context | Source |
|---|---|---|
| Heavy-metal contamination (lead, arsenic, mercury, cadmium) | Primary safety concern; risk concentrated in raw/unpurified, non-third-party-tested products, because shilajit forms within mountain rock and can absorb metals from its geological environment | NCCIH via secondary summary; FDA Ayurvedic heavy-metal warning |
| Allergic reactions | Possible; not quantified in available human trial data | Pandit 2016, Andrologia (context) |
| Lowered blood pressure | Mechanism-based concern; not directly quantified in the available RCT | Research file synthesis based on Pandit 2016, Andrologia |
| Lowered blood glucose | Mechanism-based concern; not directly quantified in the available RCT | Research file synthesis based on Pandit 2016, Andrologia |
| Elevated iron levels | Theoretical, mineral-content-related concern; relevant to iron-overload conditions | Research file synthesis |
| Unknown long-term safety, especially for raw/adulterated products | Data gap — no FDA approval or defined safety monograph; quality varies enormously by source and processing | FDA Ayurvedic heavy-metal warning |
No serious adverse events were reported in the one 90-day placebo-controlled RCT of purified shilajit at 250 mg twice daily (Pandit 2016, Andrologia). The overwhelming weight of the safety concern in this category is not about the purified, tested extract itself but about the enormous quality variability in the broader raw/unpurified shilajit market, where heavy-metal contamination is a documented and serious risk (NCCIH via secondary summary; FDA Ayurvedic heavy-metal warning).
All interactions
| Drug/substance class | Mechanism of concern | Severity/guidance | Evidence status |
|---|---|---|---|
| Antihypertensive medications | Shilajit may theoretically lower blood pressure, risking an additive effect | Use with caution; monitor blood pressure | Theoretical, mechanism-based; no dedicated human interaction trial identified |
| Antidiabetic medications (insulin, metformin, sulfonylureas) | Shilajit may theoretically lower blood glucose, risking an additive effect | Use with caution; monitor glucose | Theoretical, mechanism-based; no dedicated human interaction trial identified |
| Iron supplements / conditions of iron overload (e.g., hemochromatosis) | Shilajit's mineral content may increase iron levels | Avoid in hemochromatosis; caution when combined with iron supplementation | Mechanism-based caution from mineral composition; no dedicated human trial quantifying iron interaction |
| Anticoagulants/antiplatelets, antidepressants, sedatives, thyroid medication, statins, PPIs, oral contraceptives, antibiotics, antiepileptics, immunosuppressants | No documented mechanism identified in the reviewed literature | No specific guidance available | Data gap |
Who should avoid shilajit
- Anyone considering raw, unpurified, "wild-harvested" resin without third-party heavy-metal testing — this is the highest-contamination-risk form on the market (NCCIH via secondary summary; FDA Ayurvedic heavy-metal warning).
- Pregnant or breastfeeding people, given the heavy-metal contamination risk and the complete absence of human pregnancy-safety data.
- Children, for the same heavy-metal exposure reasons, given their lower body weight and greater vulnerability to heavy-metal toxicity.
- People with hemochromatosis or other iron-overload conditions, given shilajit's mineral (including iron) content.
- People on blood pressure-lowering or glucose-lowering medications who have not discussed concurrent use with a clinician, given the theoretical additive mechanisms and lack of dedicated interaction data.
- Anyone expecting shilajit to substitute for medical evaluation of low testosterone, chronic fatigue, or low libido — the human evidence supports, at most, a modest hormonal effect from purified extract in one small trial, not a general cure for vitality complaints (Pandit 2016, Andrologia).
Dosage and how to take
| Parameter | Value | Source |
|---|---|---|
| Dose used in the independent testosterone RCT | 250 mg purified shilajit, twice daily (500 mg/day total), for 90 days | Pandit 2016, Andrologia |
| Population studied | Healthy men aged 45–55 years | Pandit 2016, Andrologia |
| Dose used in the uncontrolled performance pilot | 500 mg/day branded resin, 28 days | Yadav 2026, Cureus — conflicted/uncontrolled, not a dosing recommendation |
| Regulatory-approved dosing framework | None exists — no FDA approval or defined monograph for shilajit as a drug | FDA Ayurvedic heavy-metal warning |
| Form recommendation based on available safety data | Purified, third-party heavy-metal-tested resin only; avoid raw/untested material | NCCIH via secondary summary |
Animal and in-vitro evidence excluded
This review relies on independent human-trial evidence only. The deeper mechanistic narrative common in shilajit marketing — mitochondrial biogenesis, cellular energy production, and broad antioxidant signaling attributed to fulvic acid and dibenzo-α-pyrones — is largely supported in the wider literature by animal and preclinical research rather than human mechanistic trials. No animal or in-vitro source met the inclusion bar for this article (full human-biological-context replication, used only where no human evidence exists), so none is cited above; readers should treat mitochondrial/cellular-energy claims in shilajit marketing as extrapolation beyond the human RCT data, which measured only hormone levels (testosterone, free testosterone, DHEAS, LH, FSH), not mitochondrial or cellular endpoints (Pandit 2016, Andrologia). No in-vitro evidence is used anywhere in this article.
Independent funding and conflict notes
| Source | Funding/affiliation | Independence rating |
|---|---|---|
| Pandit 2016, Andrologia | Academic/government Ayurvedic college (West Bengal, India) | Independent |
| Yadav 2026, Cureus | Authors affiliated with Amaara Botanicals Pvt Ltd, maker of the "TruBlk" shilajit product tested | Conflicted — industry-authored, uncontrolled design |
| HerbVerdict scorecard | Independent evidence-aggregator commentary | Probably independent |
| NCCIH via secondary summary | Summarizes findings attributed to the US National Center for Complementary and Integrative Health | Independent regulator/government source (via secondary summary; primary NCCIH page not directly available in this research) |
| FDA Ayurvedic heavy-metal warning | US federal regulator | Independent regulator |
| Kings Supplements stack protocol | Supplement retailer content | Commercial — not used for efficacy conclusions, cited only to document the viral stacking trend |
Frequently asked questions
Does shilajit actually raise testosterone?
One independent, placebo-controlled 90-day RCT in healthy men aged 45–55 found that purified shilajit (250 mg twice daily) significantly raised total testosterone, free testosterone, and DHEAS compared to placebo, while keeping LH and FSH stable (Pandit 2016, Andrologia). This is a real signal, but it comes from a single small trial in an older-male population, not a broad, replicated evidence base covering all men — the marketing claim significantly outpaces the number of trials behind it.
Is shilajit safe to take?
Purified, standardized shilajit at studied doses (up to 500 mg/day) did not produce reported serious adverse events in the one available RCT (Pandit 2016, Andrologia). However, the wider shilajit market carries a serious and well-documented risk of heavy-metal contamination (lead, arsenic, mercury, cadmium) in raw and unpurified products, and the FDA has separately warned about heavy-metal poisoning linked to unapproved Ayurvedic products (FDA Ayurvedic heavy-metal warning; NCCIH via secondary summary). Only third-party heavy-metal-tested, purified resin should be considered.
What is the difference between raw shilajit and PrimaVie/Natreon-type products?
Raw shilajit is scraped and minimally processed mountain-rock exudate with unverified composition and the highest contamination risk. Purified, standardized extracts such as the PrimaVie/Natreon category are processed and standardized to marker compounds (fulvic acid, dibenzo-α-pyrones), and this is the type of extract used in the one independent human testosterone RCT (Pandit 2016, Andrologia).
Does shilajit boost energy and athletic performance?
The main data point cited for this claim is a 28-day, single-arm pilot with no placebo or control group, run by researchers affiliated with the manufacturer of the tested product — a direct conflict of interest that, combined with the lack of a control arm, means the reported strength, endurance, and fatigue improvements cannot be attributed to shilajit itself (Yadav 2026, Cureus). Independent, controlled evidence on energy or performance does not currently exist.
Does stacking shilajit with Tongkat Ali make it more effective?
No dedicated combination trial was identified in this research. The "stack" is a social-media and retailer-driven trend (Kings Supplements stack protocol) rather than a tested clinical protocol; each ingredient's own independent human evidence for testosterone is modest at best on its own.
Is shilajit FDA-approved?
No. Shilajit is sold only as an unregulated dietary supplement in the US, with no FDA drug approval and no defined GRAS ingredient status. The FDA treats heavy-metal-contaminated Ayurvedic products, which shilajit can fall under, as adulterated (FDA Ayurvedic heavy-metal warning).
Sources and funding notes
- Pandit 2016, "Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers," Andrologia — independent, academic/government Ayurvedic college.
- Yadav 2026, open-label pilot on shilajit resin and physical performance, Cureus — conflicted, Amaara Botanicals Pvt Ltd affiliation, uncontrolled design.
- HerbVerdict shilajit evidence scorecard.
- Secondary summary of NCCIH shilajit safety findings.
- FDA warning on heavy-metal poisoning associated with unapproved Ayurvedic drug products — independent regulator.
- Kings Supplements, shilajit/Tongkat Ali stack protocol — commercial source, cited only to document the viral trend, not for efficacy claims.
Last reviewed: July 4, 2026.