Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Tradjenta (linagliptin) and metformin are both prescription medications used to manage Type 2 diabetes, but they belong to different medication classes. Tradjenta (linagliptin) is a dipeptidyl peptidase-4 (DPP-4) inhibitor, while metformin is a biguanide. Tradjenta is taken as a 5 mg tablet once daily, whereas metformin is typically started at 500 mg twice daily or 850 mg once daily and can go up to a maximum of 2,550 mg per day. Tradjenta is only available as a brand-name medication, while metformin is available in both generic and brand-name forms, including liquid and long-acting tablets. Common side effects of Tradjenta include cold symptoms and diarrhea, while metformin often causes stomach issues like diarrhea and nausea. Taking Tradjenta with medications like insulin and sulfonylureas increases the risk of low blood sugar. Metformin can increase your risk for lactic acidosis, especially if taken with contrast dyes used for some imaging procedures.
Tradjenta (linagliptin)
Metformin
Tradjenta (linagliptin)
Metformin
Summary of Tradjenta vs. Glucophage
Summary for DDP-4 inhibitor
Prescription only
Tradjenta (linagliptin) is a prescription medication that's used along with a balanced diet and exercise to manage blood sugar levels in adults with Type 2 diabetes. It's a type of diabetes medication called a dipeptidyl peptidase-4 (DPP-4) inhibitor. The dose is 5 mg (1 tablet) that's taken by mouth once per day. Tradjenta (linagliptin) doesn't cause many side effects but can sometimes include runny nose, sneezing, and diarrhea. As of 2024, Tradjenta (linagliptin) is available as a brand-name medication only; there's no generic version yet.
Summary for Biguanide
Prescription only
Immediate-release metformin is an oral diabetes medication. It's approved for people 10 years of age and older with Type 2 diabetes. The medication belongs to the drug class called biguanides. It works best to lower blood sugar levels with a diabetes-friendly diet and exercise plan. Immediate-release metformin comes as a tablet and an oral solution. You take this medication by mouth usually two to three times a day. It's recommended to take each dosage with food to help lessen side effects like diarrhea and nausea.