Positives

• Patients on shilajit commonly report it attenuates fatigue-induced decreases in muscular strength, the mechanism behind reports that shilajit helps batteries hold a charge during exertion ResearchGate.

Negatives

• Heavy metal contamination has historically been an issue with raw shilajit powders — patients are commonly told to require a third-party Certificate of Analysis confirming lead, cadmium, arsenic, and mercury below safety thresholds PMC.

Hurdles & Side Effects

• Shilajit quality varies enormously between brands; patients recommend purified forms like Primavie (Jarrow) for safety and standardization, as unregulated products may contain heavy metals Reddit.