Shilajit for Fertility: What 3 Clinical Studies Show

Last reviewed: April 16, 2026 · By Dr. Ekta Gupta · Evidence tier labels apply on every claim (see our editorial policy)

The Fertility Research on Shilajit: An Honest Look

Fertility is one of the most sensitive health topics — and one where supplement marketing routinely crosses the line from evidence to fantasy. This article does the opposite.

We look at three clinical studies that tested shilajit's effects on male reproductive health. Report their exact findings (sample sizes, durations, percentage changes), and honestly address the limitations.

We also cover what is known — and not known — about shilajit and female fertility.

If you are trying to conceive or addressing a fertility concern. This article gives you the research so you can make an informed decision with your healthcare provider.

Study 1: Pandit et al. (2016) — Sperm Quality in Infertile Men

Study Design

This randomised, double-blind, placebo-controlled trial — the gold standard of clinical research — enrolled 60 men diagnosed with oligospermia (low sperm count). Participants were between 25 and 45 years old with sperm counts below the WHO reference range for normal fertility.

The treatment group received 250 mg of purified shilajit twice daily (500 mg total per day) for 90 days. The control group received a matching placebo.

Researchers measured sperm limits and reproductive hormone levels at baseline. 45 days, and 90 days.

Key Results

After 90 days, the shilajit group showed statistically big improvements across many sperm limits compared to placebo:

• Total sperm count: increased by 61.4%
• Sperm motility: improved by 17.4% (the percentage of sperm that swim effectively)
• Normal sperm morphology: improved by 18.9% (the percentage of sperm with normal shape)
• Serum testosterone: increased by 23.5% from baseline

No big adverse effects were reported in the treatment group. The placebo group showed no meaningful changes in any limit.

What This Means

A 61.4% raise in sperm count is a large clinical finding. For context, a man with a count of 10 million per mL (below the WHO threshold of 15 million) would theoretically move to about 16 million — crossing from oligospermic to normal range.

The 17.4% improvement in motility is also meaningful. Motility is often the factor that separates "enough sperm" from "sperm that can actually reach and fertilise an egg."

but, this was a single study with 60 participants. It is a strong signal, but it needs replication in larger.

Multi-centre trials before it can be considered definitive.

Study 2: Biswas et al. (2010) — Testosterone in Healthy Men

Study Design

Biswas et al. conducted a clinical trial on healthy male volunteers aged 45–55 to assess shilajit's effect on testosterone and related hormones. This study focused on healthy aging men rather than infertile men. Making it relevant to a broader population.

Participants received purified shilajit (250 mg twice daily) for 90 consecutive days. Researchers measured total testosterone, free testosterone, luteinising hormone (LH). Follicle-stimulating hormone (FSH) at baseline, midpoint, and endpoint.

Key Results

• Total testosterone: increased by 23.5% from baseline
• Free testosterone: increased by 19.14%
• DHEA: maintained at healthy levels (no significant decline seen in placebo-comparable groups)
• LH and FSH: remained within normal ranges, suggesting the testosterone increase was not due to abnormal hormonal stimulation

What This Means

The testosterone raise is noteworthy because it happened in healthy men — not men with diagnosed deficiency. A 23.5% raise in total testosterone at age 45–55 is clinically relevant.

Male testosterone declines about 1–2% per year after age 30. So this raise effectively is reversing a decade of age-related decline.

Critically, LH and FSH remaining normal suggests that shilajit supports the body's own testosterone production rather than overriding the hypothalamic-pituitary-gonadal axis. This is a safer profile than exogenous testosterone, which suppresses natural production.

Limitations: the study lacked a placebo control in its published form. This weakens the evidence level. The sample size was also modest.

Third-party lab testing ensures purity and safety for reproductive health use.

Study 3: Spermatogenic Activity Research

The Evidence

Beyond the two major clinical trials, several preclinical studies have studied shilajit's direct effects on spermatogenesis — the process by which the testes produce new sperm cells.

Research has shown that shilajit's fulvic acid part may protect testicular tissue from oxidative damage. Is one of the leading causes of impaired sperm production.

The trace minerals in shilajit — especially zinc and selenium — are essential cofactors for spermatogenesis.

Zinc is needed for testosterone synthesis and sperm membrane integrity. Selenium is a part of selenoprotein P, which protects developing sperm from oxidative damage.

Deficiency in either mineral is independently associated with cut sperm quality.

The Mechanism

The proposed mechanism for shilajit's effects on male fertility involves many pathways working in parallel:

• Antioxidant protection: Fulvic acid reduces oxidative damage to testicular tissue and sperm cells
• Testosterone support: Through mechanisms that may involve improved Leydig cell function and mineral cofactor delivery
• Mineral delivery: Bioavailable zinc, selenium, and other trace minerals support enzymatic pathways essential for sperm production
• Mitochondrial support: Sperm are among the most energy-demanding cells in the body; improved mitochondrial function supports motility

Shilajit and Female Fertility: What We Know

This is where honesty is especially important. The clinical evidence for shilajit and female fertility is extremely limited.

No published randomised controlled trial has tested shilajit especially for female fertility outcomes such as ovulation quality. Egg reserve, implantation rates, or pregnancy rates.

What exists is theoretical and traditional:

Traditional use: In Ayurveda, shilajit is prescribed for both men and women as a rasayana (rejuvenative). It has been used traditionally to support menstrual regularity and reproductive vitality in women.

This is observational and historical rather than clinical.

Theoretical mechanisms: The mineral content (especially iron, zinc, and folate precursors), antioxidant activity. Hormonal-balancing properties of shilajit could theoretically support female reproductive health.

Oxidative stress is implicated in conditions like PCOS, endometriosis. Diminished ovarian reserve — all of which impair fertility.

The bottom line: We cannot responsibly claim that shilajit improves female fertility based on current evidence. If you are a woman experiencing fertility challenges, work with a reproductive endocrinologist.

Shilajit may be a reasonable complementary addition — discussed with your doctor — but it is not a substitute for evidence-based fertility treatment.

The Oxidative Stress Factor in Male Infertility

One of the most big contributors to male infertility is oxidative stress in the reproductive system. Sperm cells are especially vulnerable to oxidative damage because their membranes have high concentrations of polyunsaturated fatty acids.

They have limited antioxidant defence capacity compared to other cells.

Reactive oxygen species (ROS) damage sperm DNA, impair membrane integrity, and cut motility. Studies estimate that oxidative stress adds to to 30–80% of male infertility cases.

This is where shilajit's antioxidant properties become directly relevant to fertility outcomes.

Fulvic acid in shilajit is a potent free radical scavenger that works across both water-soluble and lipid-soluble environments — an unusual property that makes it good at protecting the lipid-rich sperm membrane while also scavenging ROS in the seminal fluid.

The trace minerals in shilajit further support antioxidant defence. Zinc is a part of superoxide dismutase (SOD). One of the body's primary antioxidant enzymes.

Selenium is needed for glutathione peroxidase, another critical antioxidant that especially protects reproductive tissues.

By delivering these minerals in bioavailable form. Shilajit supports the endogenous antioxidant systems that protect developing and mature sperm.

Clinical Results Summary

Study	Subjects	Duration	Key Finding	Evidence Level
Pandit 2016	60 infertile men (RCT)	90 days	Sperm count +61.4%, motility +17.4%, testosterone +23.5%	Strong (double-blind RCT)
Biswas 2010	Healthy men aged 45–55	90 days	Total testosterone +23.5%, free testosterone +19.14%	Moderate (no placebo arm published)
Spermatogenic research	Preclinical models	Varies	Antioxidant protection of testicular tissue; mineral cofactor support	Supportive (preclinical)

How to Use Shilajit for Fertility Support

Dosage

Both major clinical trials used 500 mg per day (250 mg twice daily) for 90 days. This is the evidence-based dosage for fertility-related outcomes.

Taking less may not replicate the study results. Taking more has not been shown to improve outcomes further.

Dissolve a pea-sized portion of resin in warm water or milk. Twice daily — once in the morning and once in the early evening.

Timeline

Spermatogenesis — the full cycle of sperm production — takes about 74 days. This is why both studies used 90-day protocols.

Do not expect meaningful changes in sperm limits in less than 2–3 months.

This is biology, not marketing.

Supporting Factors

Shilajit is not a magic bullet for fertility. It works best as part of a broader strategy that includes reducing alcohol consumption.

Avoiding excessive heat exposure to the testes. Managing stress and sleep, maintaining a healthy body weight. Ensuring enough dietary intake of zinc, selenium, folate, and omega-3 fatty acids.

For quality verification of the shilajit you choose, look for third-party lab testing confirming fulvic acid content and heavy metal safety. Learn about responsible sourcing and read our complete guide.

Frequently Asked Questions

Does shilajit increase sperm count?

Yes, based on available evidence. Pandit et al. (2016) found a 61.4% raise in total sperm count in a 90-day double-blind RCT of 60 infertile men taking 500 mg of shilajit daily.

This is one study and needs replication. But the result is statistically big and clinically meaningful.

How long does it take for shilajit to improve fertility?

The full spermatogenesis cycle takes about 74 days. Clinical trials used 90-day protocols.

Expect a minimum of 2–3 months of consistent daily use before measurable changes in sperm limits.

Shorter use periods are unlikely to show big results.

Does shilajit boost testosterone?

Both Pandit (2016) and Biswas (2010) found about 23.5% raises in total testosterone. Biswas showed this happened in healthy men aged 45–55. Not just in men with deficiency.

The raise appears to work through supporting natural production rather than overriding the hormonal axis.

Can women take shilajit for fertility?

Shilajit is safe for women to take. Traditional Ayurveda has used it for female reproductive health for centuries. but. No clinical trial has tested shilajit especially for female fertility outcomes.

If you are addressing female fertility concerns. Work with a reproductive specialist and discuss shilajit as a potential complementary addition.

Is shilajit safe to take while trying to conceive?

Based on the clinical trials and the safety review by Stohs and Bagchi (2014). Purified shilajit at standard doses (300–500 mg/day) has a favourable safety profile.

No big adverse effects were reported in fertility studies. but. Always inform your healthcare provider about any supplements you are taking during preconception and pregnancy planning.

Does shilajit improve sperm motility?

Pandit et al. (2016) reported a 17.4% improvement in sperm motility. Motility is critical because even enough sperm counts are not enough if the sperm cannot swim effectively to reach and fertilise the egg.

Can shilajit help with erectile dysfunction?

The testosterone raise documented in clinical studies could indirectly support erectile work. As testosterone is one factor in sexual health. but.

No study has tested shilajit especially for erectile dysfunction as a primary endpoint. ED has many causes (vascular, neurological, psychological) that a single supplement cannot address comprehensively.

What is the right dosage of shilajit for fertility?

The clinical evidence supports 500 mg per day (250 mg twice daily) for at least 90 days. This is the protocol used in both the Pandit (2016) and Biswas (2010) studies.

Do not exceed this dosage without medical guidance. As more has not been shown to mean better results.

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 shilajit evidence 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 — harvest altitude, harvester communities, and the traditional shodhana purification process — on our sourcing transparency page.
• Verification: Every batch of Yeti Life shilajit resin is tested by Eurofins for fulvic acid content (API pharmacopeial method) and heavy metals. The raw Certificates of Analysis are published in our lab results archive — not summaries, the full PDFs.
• 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.

Peer-Reviewed Research References

The core of the shilajit literature rests on a small number of foundational studies:

• Ghosal et al. (1991) — foundational biochemistry identifying humic acid, fulvic acid, dibenzo-alpha-pyrones, and trace elements as the four active fractions of shilajit. PubMed 1921793 [Review].
• Pandit et al. (2016) — randomised, double-blind, placebo-controlled trial in men 45–55. 250 mg purified shilajit twice daily for 90 days significantly raised total testosterone, free testosterone, and DHEAS versus placebo. PubMed 26395129 [Review].
• Stohs (2014) — shilajit safety and efficacy review. Properly purified shilajit is safe at recommended doses; heavy-metal contamination is the primary failure mode for cheap commercial product. PubMed 24347014 [Review].

If a shilajit brand cannot point to research, sourcing. Third-party lab verification, they are selling you the label on the jar.

Shilajit and Erectile Dysfunction

Erectile dysfunction affects millions of men worldwide. Emerging research connects shilajit to improved sexual health through its effect on testosterone and blood flow.

A clinical study by Biswas et al. (2010) found that men taking purified shilajit for 90 days experienced a 23.5% raise in total testosterone levels. Higher testosterone directly supports healthy erectile work and libido.

Shilajit also has dibenzo-alpha-pyrones, which support nitric oxide production. Nitric oxide relaxes blood vessel walls and raises blood flow to the penile tissue — the same mechanism used by medicine ED treatments.

Fulvic acid improves nutrient delivery at the cellular level. This means more oxygen and energy reach the tissues that matter for sexual performance.

While shilajit shows promise, severe ED may need medical treatment. Consult your healthcare provider for persistent erectile difficulties.

Does shilajit help with erectile dysfunction?

Studies suggest shilajit supports erectile work by boosting testosterone (23.5% raise in one clinical trial) and promoting nitric oxide production for better blood flow. Results typically appear after consistent use for 8-12 weeks.

How long does shilajit take to work for ED?

Most studies show improvements in testosterone and sexual health markers after 60-90 days of consistent daily use. Person results vary based on age, overall health, and the severity of the condition.

Does shilajit increase sperm count?

Yes. A clinical study by Pandit et al. (2016) found that men taking purified shilajit for 90 days experienced a 61.4% raise in total sperm count.

Sperm motility and semen volume also improved significantly.

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