If you use extra black pepper will it have the same effect as cayenne pepper?

While both black pepper and cayenne pepper can add heat to dishes, they have different flavor profiles and effects. Cayenne pepper contains capsaicin, which is responsible for its spiciness and has potential health benefits, such as boosting metabolism. Black pepper contains piperine, which has a milder heat and different health effects. Using extra black pepper will not replicate the specific heat or benefits of cayenne pepper.