Cayenne Pepper Extract's active compound, capsaicin, is studied for a short-lived thermogenic effect — a brief, modest rise in how many calories the body burns.
It's also associated in some research with healthy circulation, which is the secondary claim the brand's marketing material makes for this ingredient.
It's grouped with green tea as the two ingredients most directly tied to MetaboSwitch's thermogenic claims.
Where it sits in the formula: one of eight ingredients named in MetaboSwitch's marketing graphics, alongside White Kidney Bean Extract, Green Tea Extract, Garcinia Cambogia, Chromium Picolinate.