{"ok":true,"entry":{"slug":"shilajit","kind":"supplement","name":"shilajit","aliases":["mumie","moomiyo","mumijo","purified shilajit extract","primavie"],"brands_sg":["Nutricost","Jarrow Formulas","Youtheory"],"class":"herbo-mineral resin (humic substances)","tags":["fitness","mens-health"],"use_for":"early trials only — strength under fatigue, testosterone","use_after":"timing not compared","use_duration":"trials dose daily for 4–13 weeks","take_with":"warm water with meals (one 28-day pilot) · not compared","pros":["one 8-wk trial: less strength loss at 500 mg (subgroup)","one 90-day trial: testosterone up in men aged 45–55","no adverse events reported in the 8-wk trial of 63 men"],"cons":["raw resin may carry lead, arsenic, mercury, mycotoxins","few controlled human trials; composition uncertain","thallium found in some supplements above crude resin"],"dose_note":"trials use 250–500 mg a day of purified, standardised shilajit (≥50–60% fulvic acid) for 4–13 weeks; unpurified raw material is not what was tested","dosage":{"ul":null,"unit":"mg","fda_dv":null,"rda_ai":null,"ul_status":"none_established","population":"general adult","hsa_max_daily":null},"ul_status":"none_established","sg_class":null,"cautions":["pregnant or nursing — nccih: some ayurvedic products may be harmful","raw or unpurified resin — intoxication risk per 2012 review","hormone-sensitive condition — testosterone rose in one trial; ask first"],"clashes":[],"sources":[{"id":"carrasco2012","url":"https://europepmc.org/article/PMC/PMC3296184","label":"Shilajit: a natural phytocomplex with potential procognitive activity (Carrasco-Gallardo et al., Int J Alzheimers Dis 2012)","quote":"Shilajit is composed mainly of humic substances, including fulvic acid, that account for around 60% to 80% … Studies indicate the shilajit consumption without preliminary purification may lead to risks of intoxication given the presence of mycotoxin, heavy metal ions, polymeric quinones (oxidant agents), and free radicals, among others. Therefore, a purified, ready-for-use preparation for human consumption must be used. However, recent studies indicate that several ayurvedic products including shilajit and other Indian manufactured products commercialized by the Internet may contain detectable heavy metals levels as lead, mercury, and arsenic","accessed":"2026-08-27"},{"id":"hussain2024","url":"https://europepmc.org/article/MED/38393486","label":"Hazardous or advantageous: heavy metals and humic substances in shilajit (Hussain & Saeed, Biol Trace Elem Res 2024)","quote":"This phyto-mineral diffusion possesses around 65 heavy metals including the toxic heavy metals like Cu, Al, Pb, As, Cd, and Hg … The levels of reported metals in Shilajit were found to be lower than the permissible limits set by WHO and FDA, except in few studies where exceeded levels were reported. Shilajit consumption without knowing permissible levels of metals is not safe and could pose serious health problems","accessed":"2026-08-27"},{"id":"saper2008","url":"https://europepmc.org/article/PMC/PMC2755247","label":"Lead, mercury, and arsenic in US- and Indian-manufactured Ayurvedic medicines sold via the Internet (Saper et al., JAMA 2008)","quote":"One-fifth of both US-manufactured and Indian-manufactured Ayurvedic medicines purchased via the Internet contain detectable lead, mercury, or arsenic … All metal-containing products exceeded 1 or more standards for acceptable daily intake of toxic metals","accessed":"2026-08-27"},{"id":"kamgar2025_tl","url":"https://europepmc.org/article/PMC/PMC11743217","label":"Quantifying thallium in shilajit and its supplements (Kamgar et al., BMC Chemistry 2025)","quote":"Thallium contents were found up to 0.5 µg.g-1 in the supplements studied … the concentration of thallium in some supplements was higher than in crude Shilajit, raising concerns about the potential health risks associated with long-term consumption","accessed":"2026-08-27"},{"id":"kamgar2025_comp","url":"https://europepmc.org/article/MED/38133965","label":"A comprehensive review on shilajit: what we know about its chemical composition (Kamgar et al., Crit Rev Anal Chem 2025)","quote":"its chemical composition is not known with certainty … no comprehensive chemical analysis has ever been performed … more than 80% of weight of Shilajit is mainly composed of humic substances","accessed":"2026-08-27"},{"id":"stohs2014","url":"https://europepmc.org/article/MED/23733436","label":"Safety and efficacy of shilajit (mumie, moomiyo) (Stohs, Phytother Res 2014)","quote":"relatively few well-controlled human studies have been conducted on the effects of shiliajit … Additional well-controlled human and animal studies involving the use of standardized products are needed","accessed":"2026-08-27"},{"id":"wilson2011","url":"https://europepmc.org/article/MED/21530631","label":"Review on shilajit used in traditional Indian medicine (Wilson et al., J Ethnopharmacol 2011)","quote":"shilajit unfortunately lacks scientific evaluation and systematic documentation … the bioactivity of shilajit lacks substantial evidence","accessed":"2026-08-27"},{"id":"keller2019","url":"https://europepmc.org/article/PMC/PMC6364418","label":"Effects of shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline (Keller et al., JISSN 2019)","quote":"8 weeks of Shilajit supplementation at 250 mg·d-1 (low dose) and 500 mg·d-1 (high dose) versus placebo … Sixty-three recreationally-active men … For the upper 50th percentile group, the post-supplementation adjusted mean percent decline in MVIC was significantly less for the high dose group (8.9 ± 2.3%) than the low dose (17.0 ± 2.4%) and placebo (16.0 ± 2.4%) groups … PrimaVie® Shilajit is a purified and standardized form of Shilajit, which is composed of ≥50.0% fulvic acid … There were no reported adverse events during the course of this study","accessed":"2026-08-27"},{"id":"pandit2016","url":"https://europepmc.org/article/MED/26395129","label":"Clinical evaluation of purified shilajit on testosterone levels in healthy volunteers (Pandit et al., Andrologia 2016)","quote":"healthy volunteers of age between 45 and 55 years … randomised, double-blind, placebo-controlled clinical study at a dose of 250 mg twice a day. Treatment with Shilajit for consecutive 90 days revealed that it has significantly (P < 0.05) increased total testosterone, free testosterone and dehydroepiandrosterone (DHEAS) compared with placebo","accessed":"2026-08-27"},{"id":"nccih_ayurveda","url":"https://www.nccih.nih.gov/health/ayurvedic-medicine-in-depth","label":"NCCIH — Ayurvedic Medicine: In Depth (last updated Jan 2019)","quote":"Some Ayurvedic preparations may contain lead, mercury, or arsenic in amounts that can be toxic … If you're pregnant or nursing, be sure to consult your (or your child's) health care provider as some Ayurvedic products may contain products that could be harmful","accessed":"2026-08-27"},{"id":"hsa_hs_overview","url":"https://www.hsa.gov.sg/health-supplements/overview","label":"HSA — Regulatory overview of health supplements (toxic heavy metal limits), updated 15 Jul 2026","quote":"Toxic heavy metal limits — Your product must not exceed the following: Arsenic 5 parts per million (ppm); Cadmium 0.3ppm; Lead 10ppm; Mercury 0.5ppm","accessed":"2026-08-27"},{"id":"hsa_prohibited_2025","url":"https://file.go.gov.sg/hsa-chp-prohibited-restricted-ing-guidelines.pdf","label":"HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines, GL-CHPB-1-012 Rev 001 (Oct 2025)","quote":"The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list [shilajit / mumie / fulvic acid not listed in Annex A or B]","accessed":"2026-08-27"},{"id":"yadav2026","url":"https://europepmc.org/article/PMC/PMC12848467","label":"Safety and efficacy of TruBlk shilajit resin on physical performance in healthy adults: 28-day open-label pilot (Yadav et al., Cureus 2026)","quote":"open-label, single-arm pilot clinical study conducted over 28 days in 25 healthy male participants … 500 mg/day … (250 mg twice daily), dissolved in approximately 200 mL of warm water and taken with meals. The Shilajit resin used in this study was manufactured in a good manufacturing practice (GMP) facility using solvent-free aqueous extraction, standardized to ≥60% fulvic acids … No serious adverse events were reported","accessed":"2026-08-27"},{"id":"iherb_sg_shilajit","url":"https://sg.iherb.com/c/shilajit","label":"iHerb Singapore — Shilajit category (SGD pricing, delivery to Singapore)","quote":"Nutricost, Shilajit, 120 Capsules … Jarrow Formulas, Vegan Shilajit, 250 mg, 60 Veggie Capsules … Youtheory, Men®, Shilajit, 60 Veg Caps (250 mg per Capsule)","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:31.341231+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}