nateglinide vs repaglinide
Side-by-side comparison of nateglinide and repaglinide Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Starlix
Prandin
Nateglinide (Starlix) helps control blood sugar in adults with type 2 diabetes. It should be used with diet and exercise.
Repaglinide (Prandin) helps control blood sugar in adults with type 2 diabetes. It works best when used with diet and exercise.
Nateglinide is used to help lower blood sugar in adults who have type 2 diabetes. You should also follow a diet and exercise plan while taking this medicine. Nateglinide should not be used if you have type 1 diabetes or diabetic ketoacidosis.
Repaglinide is used to lower blood sugar in adults with type 2 diabetes. It should be used along with a healthy diet and regular exercise. This medicine is not for people with type 1 diabetes or diabetic ketoacidosis.
Nateglinide helps your pancreas release insulin after you eat. Insulin helps move sugar from your blood into your cells. This lowers your blood sugar levels after meals.
Repaglinide helps your pancreas release insulin after you eat. Insulin helps move sugar from your blood into your cells. This lowers your blood sugar levels.
- • Upper respiratory infection
- • Back pain
- • Flu symptoms
- • Dizziness
- • Joint pain
- • Low blood sugar
- • Upper respiratory infection
- • Headache
- • Sinus infection
- • Joint pain
- High blood sugar 76
- The medicine is not working 65
- Diarrhea 63
- Difficulty breathing 62
- Tiredness 56
- Low blood sugar 765
- Sudden kidney damage 548
- Interaction with another medicine 417
- Diarrhea 365
- Lactic acidosis (buildup of lactic acid) 364
Nateglinide can cause low blood sugar (hypoglycemia). Take it before meals and skip the dose if you skip the meal to help prevent this. There have been no studies showing that nateglinide lowers your risk of heart or blood vessel problems.
Repaglinide can cause low blood sugar (hypoglycemia). If you skip a meal, skip your dose of repaglinide to avoid low blood sugar. Do not use repaglinide with NPH-insulin. There is no proof that repaglinide lowers your risk of heart problems.
It is not known if nateglinide can harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. Nateglinide is not recommended if you are breastfeeding because it may cause low blood sugar in the baby.
Tell your doctor if you are pregnant or plan to become pregnant. Poorly controlled diabetes during pregnancy can harm both the mother and the baby. Repaglinide is not recommended while breastfeeding due to the risk of low blood sugar in the baby.
How to Read This nateglinide vs repaglinide Comparison
nateglinide is classified in the Meglitinide drug class, while repaglinide sits within the Meglitinide 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, nateglinide has 322 submissions while repaglinide has 2,459. 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 nateglinide and repaglinide — 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.