What Is Patanjali Shilajeet? Shilajeet is a mineral-rich resin found in the Himalayan rocks, formed over centuries by the decomposition of plant matter and microbial activity. In Ayurveda, it is classified as a Rasayana—a rejuvenator that enhances vitality and longevity. Shilajeet Patanjali is a purified form of this natural resin. It’s