Licorice candy is toxic to dogs, according to Optimum Choices. Licorice candy can cause issues such as muscle damage and changes in adrenal hormones when consumed by dogs. Licorice root is safe for dogs, however, according to The Whole Dog Journal.
Licorice root successfully treats a variety of ailments in dogs, including arthritis, inflammation, joint pain, urinary tract infections and digestive issues, according to Dogs Naturally Magazine. Licorice root is also a topical aid for itching and helps soothe irritation from fleas. Administration of licorice root to dogs is easiest when using drops or licorice tea. It is best to consult a veterinarian before giving licorice to dogs.