Alongside your prescribed pain-relief gel (diclofenac) and bone supplement (calcium with vitamin D), doctors commonly prescribe a muscle relaxant (such as thiocolchicoside or baclofen) to ease back stiffness and spasms. Sometimes, a simple oral pain reliever like paracetamol is also added for extra comfort. Since you have misplaced your prescription, there is no need to worry. Please contact your doctor's office or pharmacist; they can easily look up your records or issue a duplicate prescription to ensure you receive the exact medication and dosage intended for your recovery.