Both Wellmod 100 mg Tablet and Modafil MD 100 Tablet contain the same active ingredient, Modafinil, at the same strength. However, Modafil MD is a mouth-dissolving tablet that may act slightly more quickly than a standard tablet. You can usually switch between them if the dose and formulation are suitable for you, but this should only be done under medical guidance. Please confirm with your doctor or pharmacist before switching to ensure it is appropriate for you.