Brand-name medications are much more expensive than generic medications and, in most cases, not more effective. Your prescriptions will be automatically filled with the generic equivalent when available. If your doctor determines the prescribed medication is medically necessary for treatment, your doctor can inform AllHealth Network Pharmacy that no substitution should take place. The pharmacist may contact your doctor directly to clarify the instructions on the prescription. You may also request “Brand Only” with the pharmacy staff, but there may be a difference in co-pays.