exenatide vs liraglutide
Side-by-side comparison of exenatide and liraglutide Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Byetta, Bydureon
Victoza, Saxenda
Byetta is a medicine that helps adults with type 2 diabetes control their blood sugar. It works along with diet and exercise.
Liraglutide is a medicine that helps lower blood sugar levels. It is used with diet and exercise to treat type 2 diabetes in adults and children 10 years and older.
Byetta helps adults with type 2 diabetes manage their blood sugar levels. It should be used with a healthy diet and regular exercise. This medicine helps to keep your blood sugar in a normal range.
Liraglutide helps manage blood sugar levels in people with type 2 diabetes. You should use it along with a healthy diet and regular exercise. It is for adults and children aged 10 and older.
Byetta is a GLP-1 receptor agonist. It works by helping your body release insulin when your blood sugar is high. It also lowers the amount of sugar your liver makes.
Liraglutide works by mimicking a natural hormone in your body. This hormone helps your pancreas release insulin when your blood sugar is high. It also lowers the amount of sugar your liver makes.
- • Nausea
- • Low blood sugar
- • Vomiting
- • Diarrhea
- • Feeling jittery
- • Nausea
- • Diarrhea
- • Vomiting
- • Decreased appetite
- • Upset stomach
- High blood sugar 15,473
- Weight loss 12,125
- Feeling sick to your stomach 12,038
- Reduced appetite 5,644
- Low blood sugar 5,517
- Feeling sick to your stomach 7,005
- High blood sugar 3,875
- Throwing up 3,364
- Loose, watery stools 3,263
- Inflammation of the pancreas 2,316
Byetta may cause serious side effects, including pancreatitis. If you have severe stomach pain that won't go away, stop using Byetta and call your doctor right away. Never share your Byetta pen with anyone else, even if you change the needle.
Liraglutide can cause thyroid tumors in animals. It is not known if it can cause thyroid cancer in humans. You should not take this medicine if you or your family have a history of medullary thyroid carcinoma or if you have Multiple Endocrine Neoplasia syndrome type 2. Tell your doctor if you notice a lump in your neck, have trouble swallowing or breathing, or your voice becomes hoarse.
Talk to your doctor if you are pregnant or plan to become pregnant. Byetta should only be used during pregnancy if the benefit outweighs the risk to the baby. It is not known if Byetta passes into breast milk.
Liraglutide may harm your unborn baby. You should only use it during pregnancy if the benefit outweighs the risk. Talk to your doctor if you are pregnant or plan to become pregnant.
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How to Read This exenatide vs liraglutide Comparison
exenatide is classified in the GLP-1 Receptor Agonist drug class, while liraglutide sits within the GLP-1 Receptor Agonist 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, exenatide has 50,797 submissions while liraglutide has 19,823. 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 exenatide and liraglutide — 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.