Shilajit vs Tongkat Ali
Two herbal 'testosterone support' supplements with real small human trials behind them — a mineral-rich resin with a genuine contamination risk, and a root extract with the more consistent evidence base.
Shilajit
Mumie, moomiyo
A 90-day RCT in healthy middle-aged men reported higher total and free testosterone on purified shilajit — a real but small and short signal, sold under a real contamination risk (heavy metals) that varies by source and purification.
Full Shilajit evidence reviewTongkat Ali
Eurycoma longifolia
Small RCTs of standardized extract show modest free-testosterone rises and cortisol/stress reduction — but effects are small, trials are often industry-linked, and product standardization varies enormously.
Full Tongkat Ali evidence reviewSide by side
| Shilajit | Tongkat Ali | |
|---|---|---|
| Marketed for | Testosterone, energy, fertility | Testosterone, vitality |
| Evidence grade | Clinical data | Clinical data |
| Family | Hormonal | Hormonal |
| Key human source | Pandit 2016 testosterone RCT, Andrologia | Talbott RCT, JISSN 2013 |
marks a row where the two differ. Evidence grades come from our evidence matrix, which grades each molecule on the human data for the use it is marketed for.
Our verdict
Both have real, small positive human trials on testosterone: shilajit's 90-day trial in healthy middle-aged men, tongkat-ali's several small studies. Tongkat-ali's evidence base is somewhat broader and more consistent across trials; shilajit's unique risk is purity — heavy-metal contamination varies significantly by source and purification method, a risk tongkat-ali doesn't carry in the same way. Neither produces a dramatic testosterone change, and both are marketed well beyond what their modest trial data shows.
Shilajit fits if
You want additional claimed benefits (fertility, general vitality) beyond testosterone, and you verify third-party purity testing before buying.
Tongkat Ali fits if
Testosterone support specifically is the goal and you want the more consistent, better-replicated evidence base without a heavy-metal purity concern.