Another good example is Clenbuterol or Clenbuterol pills. This specific steroid has the distinct purpose of helping asthma sufferers to breathe better. Still, on the subject of steroids, it is common to hear the words cycle or stacking thrown around. A cycle or more specifically a Dianabol cycle is a popular practice of suspending the use of the steroid temporarily in order to avoid certain side effects such as overworked kidneys or liver . On the other hand, the best steroid stack is the act of combining the usage of two or more kinds of steroids in order to harness a combination of desired effects.