The treatment for pituitary-dependent Cushing's disease in dogs, the more common form of the disease, is oral medication to stop the adrenal glands from producing cortisol, according to the Food and Drug Administration. The treatment for the rarer adrenal-dependent Cushing's is oral medications or surgical removal of the adrenal gland.
Dogs medicated for pituitary-dependent Cushing's respond readily to treatment, though some symptoms disappear more gradually than others, according to the Washington State University College of Veterinary Medicine. The oral medications most commonly prescribed are trilostane and Lysodren.
Cushing's disease, or hyperadrenocorticism, occurs when a dog's adrenal glands produce too much of the hormone cortisol, states WebMD. Affecting mostly dogs over 6 years of age, Cushing's disease changes the function of many body systems. More serious symptoms include hair loss, lack of energy and difficulty breathing.