MENARIL 16 is a medication containing 16 milligrams of methylprednisolone. Methylprednisolone is a synthetic corticosteroid, similar to the natural hormone cortisol produced by the adrenal glands. It has potent anti-inflammatory and immunosuppressant properties, making it useful in treating a wide range of conditions such as allergic disorders, skin conditions, autoimmune diseases, respiratory illnesses, and inflammatory bowel diseases. It works by reducing inflammation, suppressing the immune system, and affecting protein and carbohydrate metabolism.