Can Shilajit Support Testosterone, Strength and Stamina? A Look at the Research

Shilajit has been sold for years on promises of male vitality. What has changed is the question buyers now ask: can it support testosterone, strength and workout stamina in a way that can actually be measured? Some human evidence exists, but it is narrower than Shilajit marketing usually implies. The most useful studies used purified Shilajit taken consistently for several weeks. They do not show that a single dose gives an instant boost, and they should not be read as proof that every Shilajit product behaves the same way.

Testosterone: human evidence exists, but context matters

One of the most cited trials was a randomized, double-blind, placebo-controlled study in healthy men aged 45 to 55. Participants who took 250 mg of purified Shilajit twice a day for 90 days showed significant rises in total testosterone, free testosterone and DHEAS compared with placebo.

That gives Shilajit a firmer evidence base than many ingredients sold as “testosterone boosters”, but important limits remain. The study used a specific purified extract in a fairly narrow age group. It does not show that Shilajit will raise testosterone by the same amount in younger men, in people with clinically low testosterone, or in users of a different formulation.

A 2023 systematic review of supplements sold as testosterone boosters reached a similarly careful conclusion. It rated purified Shilajit as possibly effective in certain men and did not treat it as a universally proven testosterone enhancer.

What about strength?

The case for physical performance is interesting for a different reason. In a 2019 double-blind, placebo-controlled trial, 63 recreationally active young men took 250 mg of Shilajit, 500 mg of Shilajit or a placebo daily for eight weeks. Researchers then measured how well participants kept their muscular strength after a fatiguing exercise protocol.

Among the stronger half of participants, those on 500 mg a day lost less maximal voluntary strength after fatigue than the placebo group. The lower dose did not show the same benefit.

That is not the same as saying Shilajit directly “builds muscle”. What the study suggests is that, at the higher tested dose, it may help some trained people hold on to more strength when they are tired.

Finished formulations need their own evidence

This distinction matters most for products that contain more than Shilajit. Kapiva’s Shilajit Gold Resin, for example, combines Himalayan Shilajit with Nagori Ashwagandha, Black Musli, Gokshura and Swarna Bhasma. It is a multi-ingredient, gym-focused formula, not plain Shilajit.

The formulation was also assessed in an independent, hospital-led clinical study registered as CTRI/2024/07/071339. Over eight weeks, participants took 500 mg twice a day. The study reported about a 40% rise in testosterone from baseline, roughly 30% heavier lifts and a 26% increase in treadmill time from baseline.

The words “from baseline” matter. These percentages describe how the Shilajit Gold group changed over the study period. They should not be read as 40%, 30% or 26% improvements over placebo.

This kind of product-specific research is valuable because it tests the formula people actually buy, instead of assuming that evidence on isolated Shilajit carries over to a blend.

Does Shilajit improve stamina?

“Stamina” can mean several things, which makes it a hard claim to judge. The 2019 study measured resistance to fatigue, not running endurance. Kapiva’s Shilajit Gold study tracked treadmill duration and reported a 26% increase from baseline after eight weeks. Together, these findings point to a possible role in exercise endurance, though the evidence base is still small.

Shilajit is therefore best seen as potential support for training, not a substitute for the habits that build stamina most reliably.

How long does Shilajit take to work?

This may be the most practical question of all. The better human studies measured results after eight to twelve weeks, not a few days. The testosterone trial ran for 90 days, the muscular-fatigue trial for eight weeks, and Kapiva’s Shilajit Gold study also assessed the formula over eight weeks. It is safe to conclude that what the evidence supports is consistent use over several weeks.

The evidence is promising

Shilajit now has something many traditional supplements lack: randomised human research on testosterone and fatigue-related strength, plus newer research on finished formulations. That makes the conversation more interesting than simply calling it an ancient vitality ingredient.

For anyone considering Shilajit for gym performance, the strongest case is not that it replaces training or nutrition. It is that consistent, quality-controlled Shilajit may add support for testosterone, strength retention and stamina within an already sound fitness routine.