There are many types of diet pills which are supposed to be taken while cutting or attempting to lose weight in order to raise one's metabolism and burn more calories. Some of these are fancy and expensive, such as Biotest's "Hot-Rox," while others are simply caffeine and ephedra, both of which can be ordered online fairly cheaply (Ephedra can be bought in the medicine called Bronkaid).

These stacks are somewhat controversial as they may raise levels of cortisol, which is disadvantageous towards training.