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alogliptin vs sitagliptin

Side-by-side comparison of alogliptin and sitagliptin Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

Drug Class
alogliptin DPP-4 Inhibitor
sitagliptin DPP-4 Inhibitor
Type
alogliptin Prescription
sitagliptin Prescription
Summary
alogliptin

Alogliptin and Metformin HCl is a drug that helps lower blood sugar in adults with type 2 diabetes. It works along with diet and exercise.

sitagliptin

Zituvimet is a combination of two medicines, sitagliptin and metformin. It helps lower blood sugar in adults with type 2 diabetes, along with diet and exercise.

What It Treats
alogliptin

This medicine is used to treat type 2 diabetes. It helps to control your blood sugar levels when used with diet and exercise. It is not for use in type 1 diabetes.

sitagliptin

Zituvimet is used to treat type 2 diabetes. It helps to control your blood sugar levels when diet and exercise are not enough. Zituvimet is not for people with type 1 diabetes.

How It Works
alogliptin

Alogliptin helps your body release more insulin after you eat. Metformin helps your body use insulin better and lowers the amount of sugar your liver makes. Together, they help lower your blood sugar levels.

sitagliptin

Zituvimet contains sitagliptin, which increases insulin release after you eat and decreases sugar production in your liver. It also contains metformin, which helps your body use insulin better and reduces sugar released from the liver. Together, they help lower your blood sugar levels.

Common Side Effects
alogliptin
  • Upper respiratory tract infection
  • Common cold
  • Diarrhea
  • High blood pressure
  • Headache
sitagliptin
  • Diarrhea
  • Upper respiratory tract infection (like a cold)
  • Headache
FAERS Reports
alogliptin
  • Diarrhea 134
  • Feeling sick to your stomach 124
  • Throwing up 110
  • Sudden kidney damage 101
  • Blistering skin condition 101
sitagliptin
  • Increased blood sugar 4,452
  • Feeling sick to your stomach 3,787
  • Diarrhea 3,470
  • The medicine is not working 3,467
  • Feeling tired 2,883
Serious Warnings
alogliptin

This medicine can cause a serious condition called lactic acidosis. Symptoms include feeling very sick, muscle pain, trouble breathing, sleepiness, and stomach pain. Get medical help right away if you have these symptoms. Certain conditions increase your risk, including kidney problems, taking certain other medicines, being 65 or older, and drinking a lot of alcohol.

sitagliptin

Zituvimet can cause a serious condition called lactic acidosis. This is a buildup of lactic acid in your blood. It can be life-threatening. Get medical help right away if you have symptoms like weakness, muscle pain, trouble breathing, sleepiness, or stomach pain.

Pregnancy
alogliptin

Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine will harm your unborn baby. Discuss the risks and benefits with your doctor. Also, tell your doctor if you are breastfeeding.

sitagliptin

Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if Zituvimet will harm your unborn baby. Talk to your doctor if you are breastfeeding.

Also Compare — Nearby Drugs

How to Read This alogliptin vs sitagliptin Comparison

alogliptin is classified in the DPP-4 Inhibitor drug class, while sitagliptin sits within the DPP-4 Inhibitor class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, alogliptin has 570 submissions while sitagliptin has 18,059. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between alogliptin and sitagliptin — always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.