From the Manufacturer: Shilajit (Shee-la-jeet) is a mineral-rich substance harvested from the Himalayan mountains of India. Shilajit offers a myriad of positive health benefits, including testosterone support.* Youtheory® Shilajit for Men features a patent-protected, clinically-studied and ultra-purified form of shilajit known as PrimaVie®. Boosts healthy testosterone* Patented & clinically tested Powerful adaptogenic properties* Dairy-free Soy-free No gluten ingredients