Solaray Cool Cayenne formula contains 40000 heat unit cayenne that has completed the unique and proprietary BioCool process. This process keeps the cayenne in its natural, spicy hot form, but now, it won’t burn your digestion, stomach. This is accomplished by simply processing 40000 heat-unit cayenne with 100% natural ingredients including Ginger Root, modified guar gum, vegetable fiber and annatto. Originally from South America, the cayenne plant is now used worldwide as a food and spice. Cayenne is very closely related to bell peppers, jalapeños, paprika, and other similar peppers. The fruit is used medicinally.