DRUG CLASS AND MECHANISM: Hydrocortisone is a natural corticosteroid produced by the adrenal glands located adjacent to the kidneys. Corticosteroids have potent anti-inflammatory properties, and are used in a wide variety of inflammatory conditions such as arthritis, colitis, asthma, bronchitis, certain skin rashes, and allergic or inflammatory conditions of the nose and eyes. There are numerous preparations of corticosteroids including oral tablets, capsules, liquids, topical creams and gels, inhalers and eye drops, and injectable and intravenous solutions. Hydrocortisone that is prescribed in oral tablet and liquid forms is addressed in this article.