acarbose vs glimepiride
Side-by-side comparison of acarbose and glimepiride Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Precose
Amaryl
Acarbose is a medicine that helps lower blood sugar levels in people with type 2 diabetes. It works best when used with diet and exercise.
Glimepiride is a medicine that helps lower blood sugar in adults with type 2 diabetes. It works along with diet and exercise.
Acarbose is used to help control blood sugar in adults with type 2 diabetes. You should use it along with a healthy diet and regular exercise. This medicine helps to keep your blood sugar from getting too high after you eat.
Glimepiride is used to help control blood sugar levels in adults with type 2 diabetes. It should be used with a healthy diet and regular exercise. This medicine will not work for type 1 diabetes or diabetic ketoacidosis.
Acarbose slows down the digestion of carbohydrates (sugars and starches) in your body. It does this by blocking certain enzymes in your small intestine that break down carbs. This helps to prevent a sharp rise in blood sugar after meals.
Glimepiride helps your body release more insulin. Insulin helps move sugar from your blood into your cells for energy. This lowers your blood sugar levels.
- • Gas
- • Diarrhea
- • Abdominal pain
- • Low blood sugar
- • Headache
- • Nausea
- • Dizziness
- Low blood sugar 269
- Feeling sick to your stomach 203
- High blood sugar 200
- Feeling lightheaded 160
- Loose, watery stools 147
- High blood sugar 2,972
- Feeling sick to your stomach 2,274
- Loose stools 2,169
- Medicine not working 1,918
- Feeling tired 1,827
You should not take acarbose if you have diabetic ketoacidosis or cirrhosis. Also, do not take it if you have inflammatory bowel disease, colon ulcers, or any bowel obstruction. This medicine can cause liver problems in some people. Tell your doctor right away if you develop symptoms like yellowing of the skin or eyes.
Glimepiride can cause low blood sugar, which can be severe. Be careful when driving or operating machinery. If you have an allergic reaction, stop taking glimepiride right away. People with a certain enzyme problem (G6PD deficiency) may get anemia.
Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if acarbose will harm your unborn baby. Talk to your doctor if you are breastfeeding or plan to breastfeed. It is not known if acarbose passes into breast milk.
Tell your doctor if you are pregnant or plan to become pregnant. Glimepiride may not be safe for your baby. It is usually stopped 2 weeks before delivery.
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How to Read This acarbose vs glimepiride Comparison
acarbose is classified in the Alpha-Glucosidase Inhibitor drug class, while glimepiride sits within the Sulfonylurea class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. 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, acarbose has 979 submissions while glimepiride has 11,160. 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 acarbose and glimepiride — 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.