Active Ingredient

Sitagliptin

Sitagliptin is a medication used to help control blood sugar levels in adults with type 2 diabetes. It works alongside diet and exercise to improve blood sugar management.

This medication is not used for treating type 1 diabetes or diabetic ketoacidosis.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Sitagliptin Brands

Januvia

Strengths 100mg

Sitagliptin Uses

Sitagliptin is primarily used to manage type 2 diabetes. It helps in maintaining blood sugar levels within a target range.

Improving blood sugar control in adults with type 2 diabetes
Used as part of a combination therapy with other diabetes medications
Helps reduce the risk of diabetes-related complications

How Sitagliptin Works

Sitagliptin belongs to a class of drugs known as DPP-4 inhibitors. It works by increasing the levels of incretin hormones in the body.

These hormones help to increase insulin release from the pancreas, especially after meals, and decrease the amount of sugar produced by the liver.

This dual action helps to lower blood sugar levels effectively and maintain them within a desired range.

Common side effects of Sitagliptin

Not everyone experiences side effects with Sitagliptin, and many are mild and temporary. Here are some common side effects:

Headache
Upper respiratory tract infection
Stomach pain
Diarrhea
Nausea
Joint pain
Constipation

If you experience severe or persistent side effects, it’s important to contact your doctor.

Monitor your blood sugar levels regularly as advised by your healthcare provider.
Avoid heavy alcohol consumption while taking this medication.
Inform your doctor of any other medications you are taking to avoid potential interactions.
Do not use Sitagliptin if you experience symptoms of pancreatitis, such as severe abdominal pain.
Maintain a healthy lifestyle with a balanced diet and regular exercise to enhance the effectiveness of the medication.

Always consult your doctor or healthcare provider for advice tailored to your specific health needs.

Frequently Asked Questions

How does Sitagliptin help in diabetes management?

Sitagliptin helps to lower blood sugar levels by increasing insulin release and decreasing sugar production in the liver.

When can I expect Sitagliptin to start working?

Sitagliptin starts working within a few days, but it may take a few weeks to see the full effect on your blood sugar levels.

Can I take Sitagliptin with other diabetes medications?

Yes, Sitagliptin can be used in combination with other diabetes medications. However, always follow your doctor’s advice.

Are there any dietary restrictions while taking Sitagliptin?

It is important to follow a healthy diet plan as advised by your healthcare provider to manage diabetes effectively.

What should I do if I miss a dose of Sitagliptin?

If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose and resume your regular schedule.