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Oral Diabetes Medications

There are seven classes of oral drugs for diabetes—sulfonylureas, meglitinides, D-phenylalanine derivatives, biguanides, thiazolidinediones, alpha-glucosidase inhibitors, and dipeptidyl peptidase-4 (DPP-4) inhibitors, as well as combination products. The classes of oral diabetes drugs work in different ways, so it's often helpful to take drugs from more than one class. For example, if a sulfonylurea stops working, you may be switched to metformin
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