There are two major types of hormones produced by the adrenal gland , the mineralocorticoids and the glucocorticoids. This monograph discusses prednisone which is a synthetic glucocorticoid or corticosteroid. There are many different corticosteroid drugs available and different medical conditions are treated with different corticosteroid drugs based on the individual drug’s pharmacology (potency, speed of onset, duration of action). The other types of hormones produced by the adrenal gland are called mineralocorticoids. They primarily control salt and water balance in the body.