Derived from volcanic ash, this food-grade Sodium Bentonite Clay is popular as a medicinal supplement. Starwest Bentonite Clay is silica-based and is colloidal in nature, meaning the particles suspend in liquid without breaking down or dissolving, and therefore does not get digested. The clay is released via the body's waste.

Starwest Bentonite Clay is mined in Wyoming and Montana. Mining practices are designed to keep out impurities and uses food-grade equipment. The clay is kiln-dried, milled, and screened to size. Bentonite Clay is often used to clarify beverages such as juices and wine.