Rybox is a prescription medication containing 90 mg of etoricoxib in film-coated tablet form. Each package contains 28 tablets. The medication is manufactured by Cinfa pharmaceutical company and is designed for oral use. This is a prescription medication that comes in film-coated tablet form for oral administration. Each tablet contains 90 mg of the active ingredient etoricoxib. The package contains 28 tablets. As this is a prescription medication, it should only be taken under the direction and supervision of a healthcare provider.