Shilajit
Best-in-class: Shilajit
A mineral-rich resin from the Himalayas, high in fulvic acid and trace minerals, traditionally used for energy, testosterone and vitality.
Shilajit quick facts
| Suggested dose | 250–500 mg purified resin daily. |
| How often | Daily |
| Who it's for | Energy, testosterone and vitality support. |
A 90-day randomized trial showed increased total and free testosterone and improved sperm parameters, which is better human evidence than most of this category. The critical issue is purification: raw shilajit carries a genuine heavy-metal load, including lead and arsenic, and unpurified product has caused toxicity. Third-party testing is not optional here.
How Shilajit actually works
A mineral-rich resin from Himalayan rock, with fulvic acid and dibenzo-alpha-pyrones as the proposed actives. Fulvic acid appears to act as a mitochondrial electron carrier and improves CoQ10 utilization; the DBPs have their own antioxidant activity. The testosterone mechanism is not fully characterized.
Where to get Shilajit
Find Shilajit on iHerb →The evidence for Shilajit
Graded by what exists behind each claim.
✅ Clinically validated
- RCTs show increased total testosterone and improved sperm quality in men over ~90 days.
- Supports mitochondrial energy (CoQ10 recycling) and reduces fatigue in some trials.
📊 Correlative data
- Traditional 'rejuvenator' use aligns with the energy/testosterone findings.
🧪 Theoretical / extrapolated benefits
- Broad longevity/mineral claims are reasonable but less proven than the testosterone/energy data.
How to read these tiers: they say how much human evidence exists, not how well something works — and ✗ flags harm, never a disappointing trial. How the evidence tiers work →
What Shilajit actually does
Shilajit is a mineral exudate — the phrase used in the clinical literature is “mineral pitch that oozes out of Himalayan rocks” Das 2016 — formed from plant material humified and compressed in rock over a very long time. Chemically it splits into two parts that behave completely differently, and almost every confusion about this product comes from treating them as one thing.
The big part is humic substance and it is not a molecule. Fulvic acid is an operational definition, not a compound: it is whatever polyanionic humic material stays in solution at low pH. It is a heterogeneous mixture of carboxyl- and phenol-rich polymers, redox-active and strongly metal-chelating. That chelating capacity is the reason shilajit carries a mineral profile at all, and it is also the reason it carries the contamination problem discussed further down this page. A percentage of ‘fulvic acid’ on a label is a yield from a particular extraction protocol, and two labs using different protocols will not agree.
The small part is the characterized part, and it is what the trials standardized to. The dibenzo-alpha-pyrones and their chromoprotein conjugates are low-molecular-weight, absorbable and actually identifiable, and they are the class the pharmacology of the traditional preparation has been attributed to Wilson 2011. When a study says “purified and standardized Shilajit extract” Das 2016, this is the fraction being standardized.
The best-characterized human mechanism is transcriptional, and it is in muscle rather than in a gland. Adults took a standardized extract for eight weeks with muscle biopsies before and after. Microarray identified a cluster of 17 extracellular-matrix-related probe sets significantly upregulated, confirmed by quantitative RT-PCR: tenascin XB, decorin, myoferlin, collagen, elastin, fibrillin 1 and fibronectin 1 Das 2016. That is a coherent list rather than a scatter. Decorin is the small leucine-rich proteoglycan that governs how collagen fibrils are assembled and that binds TGF-beta; myoferlin is a membrane-repair protein; fibrillin and elastin build the elastic scaffold. The named mechanism is remodeling of the connective tissue that transmits force out of a muscle fiber, not synthesis of contractile protein.
The hormone pattern is the second mechanism and its shape is informative. In a randomized, double-blind, placebo-controlled trial in men aged 45 to 55, purified shilajit raised total testosterone, free testosterone and DHEA-S against placebo — while LH and FSH were well maintained Pandit 2016. Read that combination carefully, because it rules something out. If the pituitary were being driven, LH would rise first and testosterone would follow. Gonadotropins flat with androgens up points downstream of the pituitary, at steroidogenic capacity itself — cholesterol delivery into the mitochondrion and the side-chain cleavage step that starts every steroid. The rise in DHEA-S, which is adrenal and not testicular, points the same way: something is happening at steroidogenic tissue generally rather than at one gland.
Cell, rodent, human — and where it stops
This file runs the unusual direction: human biopsy first, human outcome second. The traditional pharmacology is reviewed rather than demonstrated Wilson 2011, and the modern chain begins with tissue taken out of living people.
Step one, the biopsy trial. Overweight and class-I-obese US adults (ClinicalTrials.gov NCT02026414) took 250 mg twice daily for 8 weeks, then a further 4 weeks alongside exercise, with blood and muscle biopsies at each visit. Seventeen ECM probe sets rose; glucose, lipids, creatine kinase and serum myoglobin did not move at either time point Das 2016. Note what was not measured: strength, power, endurance, testosterone. The trial that found the mechanism did not test whether it did anything.
Step two, the placebo-controlled function trial, and the dose finding buried inside it. Sixty-three men, 8 weeks. After a fatiguing protocol, maximal strength declined 8.9 ± 2.3% on the high dose against 17.0 ± 2.4% on the low dose (P = 0.022) and 16.0 ± 2.4% on placebo (P = 0.044). Serum hydroxyproline — a collagen-degradation marker — ran 1.5 ± 0.3 µg/mL on the high dose against 2.4 ± 0.3 on both the low dose (P = 0.034) and placebo (P = 0.024) Keller 2019. The commercially important sentence is the one nobody quotes: the low dose was indistinguishable from placebo on both endpoints. 17.0% versus 16.0% is not a trend.
Step three, the marker that closes the mechanistic loop. Thirty-five men, mean age 21.1 ± 1.8 years, 8 weeks. Serum Pro-C1-alpha-1, a biomarker of type-1 collagen synthesis, rose from 42.5 ± 12.4 to 82.3 ± 46.5 ng/mL on the low dose (P = 0.008, d = 1.2) and from 42.7 ± 12.7 to 113.1 ± 78.7 ng/mL on the high dose (P = 0.007, d = 1.3) Neltner 2022. Collagen-gene transcription up in biopsy Das 2016, collagen-synthesis marker up in serum, collagen-degradation marker down under fatigue Keller 2019: for a supplement, that is an unusually complete chain, and it is the strongest thing on this page.
Step four, the two trials with the biggest headline numbers and no control group at all. Thirty-five oligospermic men enrolled and 28 completed 100 mg of processed shilajit twice daily for 90 days: total sperm count +61.4%, motility +12.4 to 17.4%, normal morphology +18.9%, semen malondialdehyde −18.7%, serum testosterone +23.5% (P < 0.001) and FSH +9.4% (P < 0.05) — all compared with baseline value Biswas 2010. And in 2026, 25 healthy men aged 21 to 55 took 500 mg/day of a shilajit resin for 28 days, open-label and single-arm: leg-press 1RM +12.94% (P < 0.001), muscular endurance +12.30%, grip strength +5.73% (P = 0.038), VO2 max +1.36% (P < 0.001), Fatigue Severity Scale −32.40%, CRP −25.35% (P = 0.023), lean body mass +1.5% (P = 0.002) Yadav 2026.
The specific obstacle is the study design, and it splits this file cleanly in two. Every large percentage above comes from a study with nobody to compare against. A 12.94% gain in leg-press 1RM over 28 days in men who are lifting and being watched is the standard size of a learning effect on that machine; a 61% rise in sperm count over 90 days in an infertility clinic is within the swing of repeat semen analyses in the same man. Neither is evidence of nothing, and neither is evidence of an effect. The placebo-controlled results are the smaller ones: a strength decline of 8.9% instead of 16.0% Keller 2019, and collagen markers Neltner 2022. Buy the product on those, not on the percentages.
And the testosterone claim, which is what most people are here for, rests on one trial. It is randomized, double-blind and placebo-controlled, which is the right design, and it reports total testosterone, free testosterone and DHEA-S all significantly higher at P < 0.05 after 90 days at 250 mg twice daily Pandit 2016. Its abstract states no sample size and no effect size. “It rose significantly” and “it rose enough to matter” are different claims, and the most-cited testosterone finding on this shelf publishes only the first.
Shilajit — which form, and does it matter
Resin and standardized extract are not two grades of one product, and the evidence sits almost entirely with one of them. The biopsy trial used a “purified and standardized Shilajit extract” Das 2016; the fertility trial used “processed Shilajit” Biswas 2010; the testosterone trial used “purified Shilajit” Pandit 2016. The only trial of a traditional resin is the open-label single-arm one, and its authors say so plainly: previous studies evaluated standardized extracts and clinical evidence on the resin formulation is limited Yadav 2026. Anyone selling raw resin on the strength of the extract trials is borrowing evidence across a preparation boundary.
What purification is actually removing, which is the point. Traditional processing — decoction, filtration, repeated washing — exists because the raw exudate carries what the rock carries Wilson 2011. Fulvic acid is a metal chelator by chemical nature, so a material rich in it is a material that has been concentrating metals out of its substrate for centuries. The purification step is not cosmetic and it is not a marketing word.
The 2025 measurement that should change what you ask a supplier. Thallium was quantified in natural shilajit and in shilajit supplements: up to 0.226 micrograms per gram in the natural material, up to 0.5 micrograms per gram in supplements, with a single pill introducing up to 0.095 micrograms of thallium Kamgar 2025. Thallium is not lead, arsenic, cadmium or mercury — and those four are what a standard supplement heavy-metal certificate of analysis reports. A perfectly clean third-party certificate can be silent on the element a 2025 paper went looking for and found.
So the specification to demand has five parts, and most sellers supply two. The preparation (resin or standardized extract); the dibenzo-alpha-pyrone content, because that is the characterized fraction the trials standardized Das 2016; the fulvic acid percentage and the method used to measure it, since the number is protocol-dependent; a lot-specific ICP-MS panel; and thallium explicitly named on that panel Kamgar 2025.
On dose, the card's range hides a real finding. Every trial that separated from placebo used the higher of two doses Keller 2019, and the biopsy, testosterone and resin trials all used 500 mg/day — 250 mg twice daily Das 2016 Pandit 2016 Yadav 2026. A 250 mg/day product is not a smaller version of the tested dose; on the one head-to-head comparison it performed like placebo.
What would have to be true, and how you would know it was not
1. The androgen panel, in the population it was measured in. Draw total-testosterone, free-testosterone and dhea-s before starting and again at 12 weeks on 500 mg/day, both draws between 8 and 10 a.m. In a man in the 45-to-55 band studied Pandit 2016, predict all three higher. The far more interesting prediction is the one beside it: predict lh-fsh unchanged. Gonadotropins flat while androgens rise is the fingerprint of the mechanism above; if LH climbs instead, something else is happening and it is not what this trial described.
2. The prediction that cuts against the product. In a man under 35 with a baseline total testosterone already in the upper half of the range, predict no measurable change at 12 weeks. The only placebo-controlled androgen data are in 45-to-55-year-olds Pandit 2016; the trials in young men measured collagen markers and fatigue and never reported a testosterone result Keller 2019 Neltner 2022. The demographic that buys the most of this is the demographic it has never been shown to work in.
3. ferritin, up rather than down, and this one is a safety prediction. A metal-chelating mineral exudate carries iron. Draw ferritin at baseline and at six months. Predict a drift upward rather than any fall, and predict that anyone starting with a ferritin already over the reference range gets a bigger drift. If it climbs, the question is not the dose, it is whether the product should be in the cupboard at all.
4. hs-crp, where an uncontrolled number needs deflating. The resin study reported CRP down 25.35% at 28 days without a control arm Yadav 2026. Predict a smaller fall or none. Within-person hs-CRP varies enormously with any minor infection, so predict this specifically: two baselines a fortnight apart before starting, and a change is only real if the post value sits outside the range those two described.
5. uric-acid, drawn because the traditional caution says to. Predict it unchanged. It is one extra line on a panel you are already drawing, and a rise is the reason to stop rather than to persist — particularly for anyone with a history of gout.
6. The marker with the best evidence is the one you cannot order, and pretending otherwise would be dishonest. Serum Pro-C1-alpha-1 roughly doubled at eight weeks with a large effect size Neltner 2022, and it is a research assay rather than a clinic-orderable test. The nearest orderable substitute is grip strength, measured properly: three maximal efforts each hand, best of three, same dynamometer, at baseline and 8 weeks — against a 5.73% change Yadav 2026, which is at the edge of what a hand dynamometer can resolve in one person.
What nobody has tested yet
Nobody has connected the biopsy to a function. The trial that found 17 upregulated ECM genes did not measure strength Das 2016; the trials that measured strength did not biopsy Keller 2019 Neltner 2022. One study, with both endpoints in the same people, would establish whether the transcriptional signature is the reason for the functional result or a coincidence sitting next to it. It has not been run in the decade since the biopsy data appeared.
Nobody has run a controlled trial of the resin. Every mechanistic result belongs to a standardized extract; the resin, which is what most people actually buy, has one open-label single-arm study of 25 men over 28 days Yadav 2026. A placebo-controlled resin trial is the single most commercially relevant missing study on this page.
Nobody has measured thallium in a person who takes this. The concentration in the product is now quantified Kamgar 2025; the concentration in the consumer is not. Thallium is measurable in urine by ICP-MS in any toxicology laboratory. Thirty daily users, one spot urine each, and the most important open safety question about shilajit would be answered in an afternoon.
Nobody has published the testosterone trial's numbers properly. A randomized placebo-controlled result reported as “significantly increased, P < 0.05” with no n and no magnitude in its abstract Pandit 2016 cannot be pooled, cannot be power-calculated against, and cannot tell a reader whether the change is 5% or 40%. Replication in a second placebo-controlled trial, in a stated population, with effect sizes, is overdue by a decade.
And nobody has taken it for a year. The longest controlled exposure on record is 90 days Pandit 2016 Biswas 2010. For a daily mineral product with a metal-chelating chemistry, the twelve-month question is not academic; it is the accumulation question, and it is open.
Shilajit — its own safety story, not its category's
The safety data that exist are genuinely reassuring, and the denominator is small enough to state. Hepatic and renal profiles were unaltered in 28 men on 200 mg/day for 90 days Biswas 2010. Glucose, lipids, creatine kinase and myoglobin did not change over 12 weeks of 500 mg/day with biopsies Das 2016. All safety laboratory parameters stayed within normal limits in 25 men over 28 days on the resin, with no serious adverse events Yadav 2026. Add the controlled trials and the total human exposure under formal laboratory observation is on the order of two hundred people for three months or less. That is the denominator behind “well tolerated”.
The distinctive risk is not the substance, it is what the substance was sitting in — and there is now a number for it. Thallium was found at up to 0.226 µg/g in natural shilajit and up to 0.5 µg/g in marketed supplements, with a single pill delivering up to 0.095 µg Kamgar 2025. Thallium is a cumulative neurotoxin whose classic presentation is painful peripheral neuropathy followed weeks later by hair loss, and there is no widely adopted regulatory limit for it in dietary supplements — which is exactly why it does not appear on the certificates of analysis that say “heavy metals tested”. Ask for it by name, or accept that the certificate does not cover it.
Iron, and the person who should not take this at all. A metal-rich chelating exudate is an iron source. Anyone with hereditary hemochromatosis, a raised ferritin, or transfusion-dependent anemia is in the one population for whom adding an uncharacterized daily mineral load has a mechanism for harm and no mechanism for benefit. This is not a caution to read past; it is a contraindication.
The androgen interaction runs in both directions and only one is ever mentioned. If the trial result is real, this raises total testosterone, free testosterone and DHEA-S Pandit 2016. On testosterone replacement that is additive rather than parallel. In prostate cancer it is the wrong direction. And in a woman — who is sold this for energy as often as a man is — DHEA-S is usually the adrenal androgen already highest in polycystic ovary syndrome, so a product that raises it is a poor fit for the hormonal picture it is most likely to meet. None of that appears on a shilajit label.
And two conventional ones, stated at their real strength. Raised uric acid and gout flares are reported traditionally rather than measured in the trials above, so treat that as a reason to draw the test rather than as an established effect. Pregnancy and breastfeeding are not populations with data here, and a metal-bearing mineral exudate is the wrong category of unknown to accept while pregnant.
Sources read for this page
- Pandit S, et al. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia 2016 · PMID 26395129
- Das A, et al. The Human Skeletal Muscle Transcriptome in Response to Oral Shilajit Supplementation. Journal of Medicinal Food 2016 · PMID 27414521
- Keller JL, et al. The effects of Shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline levels. Journal of the International Society of Sports Nutrition 2019 · PMID 30728074
- Neltner TJ, et al. Effects of 8 Weeks of Shilajit Supplementation on Serum Pro-c1alpha1, a Biomarker of Type 1 Collagen Synthesis: A Randomized Control Trial. Journal of Dietary Supplements 2022 · PMID 36546868
- Biswas TK, et al. Clinical evaluation of spermatogenic activity of processed Shilajit in oligospermia. Andrologia 2010 · PMID 20078516
- Yadav D, et al. Safety and Efficacy of TruBlk Shilajit Resin Supplementation on Physical Performance and Blood Biomarkers in Healthy Adults: A 28-Day Open-Label Pilot Study. Cureus 2026 · PMID 41613504
- Kamgar E, et al. Quantifying of thallium in Shilajit and its supplements to unveil the potential risk of consumption of this popular traditional medicine. BMC Chemistry 2025 · PMID 39827344
- Wilson E, et al. Review on shilajit used in traditional Indian medicine. Journal of Ethnopharmacology 2011 · PMID 21530631
How you would know if it worked
These are the markers this product's own mechanism names, which makes them the ones that would show it working.
- Total Testosterone Retest: 6–8 weeks after any protocol change; every 3–6 months on TRT.
- Heavy Metal Testing Retest: After removing a suspected source; per occupational health requirements.
- Coenzyme Q10 Retest: 12 weeks after starting supplementation.
Draw before you start, not after. A result with nothing to compare it to answers nothing.
Shilajit — safety & side effects
- Generally well tolerated. The distinctive risk is not the substance but the sourcing: unpurified shilajit has repeatedly been found contaminated with heavy metals, mycotoxins and free radicals. Buy purified, third-party tested material or do not buy it.
- Contains iron and may raise iron stores — avoid with hemochromatosis or a raised ferritin.
- Avoid with active gout: reports of raised uric acid.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this against it with a pharmacist or doctor — pharmacists are underused and free.
- When to take it, and what to take it with
- Which form actually absorbs
- Who it's worth it for
- Best-in-class brand pick
- Coach Cam's stacks and notes
- Fasted or with food, and when in the day
- Morning or night, and why that window
- Around training, or deliberately away from it
- What it must not share a window with
Everything above is free and stays free. Skool is where it becomes a plan — Shilajit in an order, with the rest of what you're running.
Unlock in Skool — $10/mo →Bloodwork to run alongside Shilajit
Baseline first, then again at 8–12 weeks.
| Marker | What it’s watching for |
|---|---|
| Heavy Metal Testing | A geological resin — testing repeatedly finds arsenic, lead and mercury |
| Comprehensive Metabolic Panel (CMP) | Kidney and liver, which is where heavy metals present |
| Complete Blood Count (CBC) with Differential | Lead exposure shows up as anemia |
| Total Testosterone | The claim people buy it for — measure rather than assume |
The Heavy Metals & Mineral Balance panel covers these in one order — 7 markers, $270.90 with the discount applied.
Check results you already have → · All 103 markers A–Z
Shilajit — frequently asked questions
What is Shilajit?
A mineral-rich resin from the Himalayas, high in fulvic acid and trace minerals, traditionally used for energy, testosterone and vitality.
What is the suggested dose of Shilajit?
250–500 mg purified resin daily. This is a general reference for education only — statements have not been evaluated by the FDA and this is not medical advice.
Where can I find Shilajit dosing and the full breakdown?
The suggested dose and the full evidence — clinical, correlative and theoretical — are on this page. What's inside Skool is when to take it, which form actually absorbs, the brand worth buying and Coach Cam's stacks.
Where can I buy Shilajit?
Coach Cam sources Shilajit from vetted, top-rated brands on iHerb — use the buy link on this page.
Shilajit inside a finished plan
One arm of 1 Protocol Blueprint, free to read in full.
What Shilajit is used for
Shilajit appears under 3 goals in the goal router.
Related Hormonal & Wellness supplements
Where this goes next
Shilajit is the upstream arm of this plan. The page above is the free breakdown of one compound; the plan it belongs to — the dosing, the order to correct things in, the week-by-week schedule and what to retest — is a lesson inside Skool.