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Among Shilajit's many traditional uses, its reputation as a male vitality tonic is one of the most enduring. Modern research has begun to investigate this claim directly — with some of the most compelling clinical evidence for Shilajit's effects coming from studies specifically examining its impact on testosterone and male reproductive health.
Testosterone is the primary male sex hormone — essential for energy, muscle mass, bone density, libido, mood, and cognitive function. Testosterone levels naturally decline with age, and many men experience this decline earlier than expected due to stress, poor nutrition, sedentary lifestyle, and mineral depletion.
Shilajit appears to support healthy testosterone levels through multiple mechanisms — and the evidence for this is stronger than for many other claims made about natural testosterone-supporting supplements.
Clinical evidence: A double-blind, placebo-controlled study published in Andrologia found that men taking purified Shilajit for 90 days showed significantly higher total testosterone, free testosterone, and DHEA levels compared to placebo.
Zinc and testosterone: Zinc is one of the most important minerals for testosterone production — it's a cofactor in the enzymatic processes that synthesise testosterone. Shilajit's zinc content and fulvic acid-enhanced zinc delivery directly support this pathway.
Mitochondrial energy in Leydig cells: Testosterone is produced by Leydig cells in the testes — cells with high mitochondrial energy demands. Shilajit's mitochondrial support via DBPs may directly support these energy-intensive cells.
The most cited study (published in Andrologia, 2015) followed healthy male volunteers taking purified Shilajit for 90 days and found statistically significant increases in total testosterone, free testosterone, and DHEA compared to placebo. This is considered strong evidence by natural supplement standards.
The clinical studies used 90-day protocols, suggesting hormonal effects build over 8–12 weeks. This aligns with the general principle that Shilajit's effects are cumulative. See How Long Does Shilajit Take to Work? for more.
If you're taking any medications or supplements that affect hormones, speak to your doctor before adding Shilajit. As a natural mineral supplement, it has no known significant interactions with most common supplements, but hormonal combinations should be managed carefully.
Shilajit has clinical evidence supporting its ability to raise testosterone levels in men — making it one of the few natural supplements with published trial data on this specific outcome. It works through zinc delivery, mitochondrial support in testosterone-producing cells, and gonadotropin signalling. Effects build over 8–12 weeks of consistent daily use and are most relevant for men experiencing symptoms of declining testosterone.
Equil's Shilajit is sourced from the Kumaon Himalayas, third-party tested for purity and potency, and contains no fillers or additives. Visit our Shilajit product page or read the Complete Guide to Shilajit to learn more.