The active ingredient is Methylprednisolone. Nonmedicinal ingredients: Calcium stearate, Cornstarch, Lactose, Mineral oil, Sucrose This medicine is gluten-free. Each white, elliptical, cross-scored tablet, engraved "Medrol 16", contains methylprednisolone 16 mg. Fact Table Formula C22H30O5 License US FDA Bioavailability 14.2% Legal status US: RX Only Chemical Name Methylprednisolone Elimination half-life 1.8-2.6 hours Dosage (Strength) 2mg (100 tablets), 4mg (100 tablets) Pregnancy Consult a doctor Brands Medrol, Duralone, Medralone, M-Prednisol, Solu-Medrol Protein binding 78% PubChem CID 6741 MedlinePlus a682795 ChEBI 6888 ATC code D07AA01 DrugBank DB00959 KEGG D00407 Routes of administration By mouth (tablets)