What Does Orectic Mean?
Orectic is an adjective meaning relating to appetite or desire, from the Greek word orexis (appetite). It is rarely used by itself in everyday pet health writing, but it is the root of two terms vets use often: orexigenic (appetite stimulating) and anorectic (appetite suppressing). If you have seen the word spelled "irectic," that is a common misspelling of orectic.
Understanding Orectic, Orexigenic, and Anorectic
These three related words all come from the same Greek root, orexis, meaning appetite or desire. Orectic is the broad adjective: something orectic relates to appetite in some way. It splits into two more specific and far more commonly used terms depending on the direction of the effect. Orexigenic describes something that stimulates or increases appetite. Anorectic describes something that suppresses or reduces it, and is closely related to the more familiar word anorexia, a lack or loss of appetite.
In veterinary medicine, orexigenic is the term you'll actually encounter, usually attached to a medication. When a dog or cat stops eating due to illness, nausea, kidney disease, cancer treatment, or recovery from surgery, a veterinarian may prescribe an orexigenic medication to stimulate appetite while the underlying cause is diagnosed and treated. Two of the most commonly used orexigenic drugs in small animal practice are mirtazapine, an older human antidepressant that has a strong appetite-stimulating side effect in dogs and cats, and capromorelin, sold under the brand name Entyce for dogs and Elura for cats, developed specifically as an appetite stimulant.
It's important to understand that an orexigenic medication treats a symptom, not a cause. A pet who isn't eating always needs a veterinary exam to identify why, appetite loss can be an early sign of serious conditions ranging from dental pain to organ disease to cancer. Appetite stimulants are typically used alongside diagnosis and treatment of the underlying issue, not as a standalone fix, and should only be given under veterinary direction.