The Hot Cayenne that feels Cool in your stomach! 90 easy to swallow capsules. Extra Hot Cool Cayenne formula contains 100,000 heat-unit Cayenne that has completed the unique and proprietary Bio-Cool process. This process keeps the Cayenne in its natural, spicy hot form, but now, it feels cool in your stomach. The Solaray brand has accomplished this by specially processing 100,00 heat-unit Cayenne with 100% natural ingredients including ginger root, modified guar gum, vegetable fiber, and annatto.