Mineral-rich tar from the Himalayas. Sounds weird, has some clinical evidence for testosterone and mitochondrial function. Cymbiotika's version is purified and standardized. At $70+, you're paying for premium quality. Nootropics Depot offers similar for 1/3 the price.
Purified shilajit at 500mg hits 100% of the optimal dose, standardized to 50% fulvic acid. The evidence base for shilajit is growing (testosterone, energy, mitochondrial function) but still limited to small studies. For its category (longevity/adaptogen), a full optimal dose of a quality-standardized product is a fair offering. The resin form is traditional and possibly better absorbed than capsules.
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