Shilajit (Mumijo / Purified Asphaltum)

Dibenzo-α-pyrones in shilajit can act as electron carriers in the mitochondrial respiratory chain, helping preserve CoQ10 in its active ubiquinol form. Animal work shows improved ATP output and reduced fatigue; human data is limited to small trials in chronic fatigue syndrome and exercise contexts. Evidence: preliminary but mechanistically plausible.

A 90-day randomised, placebo-controlled trial in healthy men aged 45–55 found purified shilajit (250 mg twice daily) significantly raised total and free testosterone and DHEA-S versus placebo. A separate trial in infertile men reported improved sperm count and motility. Evidence: moderate for a supplement category, though trials are small and often industry-funded.

Small human trials suggest 8 weeks of shilajit supplementation helps maintain maximal muscle strength during fatiguing protocols and reduces markers of collagen/connective tissue breakdown (hydroxyproline). Benefits appear modest and most consistent in trained or middle-aged populations. Evidence: limited.

Fulvic and humic acids are potent free-radical scavengers and have been shown to reduce lipid peroxidation and inflammatory cytokines in animal and cell models. This may underpin several of shilajit's broader claimed effects. Evidence: strong preclinically, sparse in humans.

Fulvic acid inhibits tau self-aggregation in vitro, and animal studies show improved memory and protection against cognitive decline. Shilajit is being explored as an adjunct in Alzheimer's research but no robust human outcome trials exist. Evidence: preclinical/exploratory only.

Morning or early afternoon is best — many users report a mild stimulating or alerting effect that can disrupt sleep if taken late. If splitting a 500 mg daily dose, take 250 mg in the morning and 250 mg early afternoon. For training, take the morning dose 60–90 minutes pre-workout.

Can be taken with or without food. The classic Ayurvedic method is to dissolve a rice-grain-sized piece of resin in warm (not boiling) water or warm milk, which aids dispersion of the fulvic acid fraction. Avoid taking at the same time as coffee, tea or calcium supplements if you are iron-deficient-sensitive, since shilajit's mineral content interacts with these; conversely, avoid pairing with iro

Typical studied range is 200–500 mg/day of purified shilajit extract; the main testosterone RCT used 250 mg twice daily for 90 days. Resin forms are usually dosed at 300–500 mg (pea- to rice-grain-sized). Start at the low end for 1–2 weeks. Benefits in trials emerged over 8–12 weeks, so judge over months, not days. Cycling (e.g. 8–12 weeks on, 2–4 weeks off) is common practice though not evidence-

Purified resin is the traditional and most potent form; standardised capsules/powders (e.g. PrimaVie, standardised to ≥50% fulvic acid and DBPs) offer dose consistency and third-party purity testing. Avoid raw, unpurified shilajit entirely — it can contain heavy metals, mycotoxins and free radicals. Always choose a product with a current heavy-metal certificate of analysis (lead, arsenic, mercury,

Avoid if you have haemochromatosis, thalassaemia, sickle cell disease or any iron-overload condition, as shilajit increases iron absorption and contains iron. Avoid in pregnancy and breastfeeding (insufficient safety data). Use caution with hormone-sensitive conditions such as prostate cancer given the androgenic effect. May additively lower blood pressure and blood glucose — monitor if on antihyp

Shilajit's effect on mitochondrial bioenergetics is the main rationale; rodent models of chronic fatigue syndrome show restored ATP and reduced stress markers. Human evidence is anecdotal and preliminary, but it is one of the more commonly reported subjective benefits.

The 90-day RCT in men aged 45–55 showed roughly a 20% rise in total testosterone versus placebo. It is not a replacement for medical testosterone therapy in diagnosed hypogonadism, but may support borderline-low levels.

A trial in oligospermic men reported increased sperm concentration, motility and normal morphology after 90 days of purified shilajit. Sample sizes were small and replication is lacking.

Traditionally used in Himalayan regions for altitude adaptation; proposed mechanisms include improved oxygen utilisation, antioxidant defence and mitochondrial efficiency. Human clinical evidence is essentially absent — this remains traditional use.

Fulvic acid's anti-tau-aggregation activity and antioxidant effects give a plausible neuroprotective mechanism, supported by animal memory studies. No adequately powered human trials in dementia or MCI exist, so this should be considered speculative.

Both are Ayurvedic rasayanas with complementary actions: ashwagandha lowers cortisol and supports stress resilience while shilajit targets mitochondrial energy and androgens. Both have independent testosterone trial data in men, making them a common stacking choice. View Ashwagandha (KSM-66 or Sensoril) guide →

Shilajit's dibenzo-α-pyrones help regenerate and stabilise CoQ10 in its reduced ubiquinol form inside mitochondria. Animal studies show shilajit plus CoQ10 produces greater ATP and antioxidant effects than either alone — one of the better-documented supplement synergies for shilajit. View CoQ10 / Ubiquinol guide →

Creatine boosts phosphocreatine stores for rapid ATP regeneration while shilajit supports oxidative ATP production, covering complementary energy systems. Both also have independent evidence for strength maintenance, making the pair logical for training performance. View Creatine monohydrate guide →

Vitamin D status is independently associated with testosterone levels and muscle function, and deficiency is widespread. Correcting it alongside shilajit addresses a common limiting factor that shilajit alone cannot fix. View Vitamin D3 with K2 guide →

Zinc is an essential cofactor for testosterone synthesis and sperm quality; deficiency blunts androgen production. Pairing it with shilajit covers the nutrient prerequisite side of the hormonal pathway, though avoid high-dose zinc long-term without copper. View Zinc (with copper balance) guide →

Both raise circulating total and free testosterone, though shilajit does so modestly (~20% in one 90-day RCT) and appears to act by supporting endogenous production rather than supplying exogenous hormone. The magnitude and reliability are vastly smaller than TRT, and shilajit is not a clinical substitute for diagnosed hypogonadism.

Both aim to increase endogenous testosterone while preserving testicular function and fertility, contrasting with exogenous testosterone. The mechanisms differ — clomiphene blocks hypothalamic oestrogen receptors to raise LH/FSH, while shilajit's pathway is less defined — and the clinical evidence for shilajit is far weaker.

Shilajit's dibenzo-α-pyrones function as mitochondrial electron carriers and help regenerate ubiquinol, mechanistically overlapping with quinone-based mitochondrial drugs used in mitochondrial myopathies. Evidence for shilajit here is preclinical and in vitro, not clinical.

Shilajit contains bioavailable iron and its fulvic acid markedly enhances mineral absorption, sharing a directional effect on iron status with iron supplements. This is a relevant interaction more than a therapeutic equivalence — it means shilajit should be avoided in iron overload and may compound iron supplementation.