Acarbose | Health Navigator NZ

Acarbose is used to treat type 2 diabetes. Find out how to take it safely and possible side effects. Acarbose is also called Glucobay or Accarb.

Type of medicine	Also called
Medication for type 2 diabetes	Glucobay® Accarb®

What is acarbose?

Acarbose is used to treat type 2 diabetes, together with exercise, good nutrition, weight loss and other lifestyle measures. It may be used alone or with other medicines for diabetes. Acarbose works by slowing the digestion and absorption of carbohydrates (sugars) and in this way lowers high blood glucose after each meal. To work properly acarbose must be taken at the start of a meal (with the first bites). In New Zealand acarbose is available as tablets (50 mg and 100 mg).

Read more about type 2 diabetes and medicines for type 2 diabetes.

Dose

The starting dose of acarbose is 50 milligrams 3 times a day.
Depending on your blood glucose level, your doctor may increase your dose to 100 milligrams 3 times a day. Some people may need a higher dose.
Always take your acarbose exactly as your doctor has told you. The pharmacy label on your medicine will tell you how much acarbose to take, how often to take it and any special instructions.

How to take acarbose

Timing: Chew your acarbose tablet with the first mouthfuls of food at each meal, or swallow the tablet whole with a little water just before your meal.
Limit or avoid drinking alcohol while you are taking acarbose. It may affect your blood glucose control.
Missed dose: If you forget your dose with your meal, wait to take the next dose with your next meal. Do not take double the dose and do not take the tablets between meals.
Keep taking acarbose regularly. To control your diabetes, you must keep taking acarbose every day.
Unwell from vomiting or diarrhoea (runny poos): If you have severe gastro such as vomiting or diarrhoea lasting more than a few hours and are at risk of dehydration, ask your healthcare provider for advice. They may recommend that you stop taking acarbose until you are better. Read more about diabetes sick day plan.

Possible side effects of acarbose?

Like all medicines, acarbose can cause side effects, although not everyone gets them. Often side effects improve as your body gets used to the new medicine.

Side effects	What should I do?
Bloating or gas in the tummy Diarrhoea (loose, watery stools)	These are very common when you first start taking acarbose (they affect more than 1 in 10 people). Eating foods containing sucrose (sugar) with acarbose is likely to make these symptoms worse. These effects usually go away with time. Tell your doctor if troublesome.
Nausea (feeling sick) Vomiting (being sick) Indigestion Loss of appetite	These are less common side effects (they affect fewer than 1 in 10 people). Tell your doctor if troublesome.
Signs of low blood glucose (hypoglycaemia) such as feeling weak, faint, dizzy or irritable. You may get a headache, tremor (shakes) or blurred vision.	Very rarely acarbose may lower your blood glucose too much. This is most likely to occur if you are taking acarbose with other diabetes medicines. If this happens, drink something sweet such as a small glass of sweetened soft drink or fruit juice, or eat something sweet like lollies. Follow this up with a snack such as a sandwich. Read more about hypoglycaemia. Tell your doctor or nurse if this happens.
Signs of an allergic reaction such as skin rash, itching, swelling of your lips, face and mouth, or difficulty breathing.	Allergy to acarbose is very rare. Tell your doctor immediately or phone Healthline free on 0800 611 116.
Signs of problems with your liver such as yellowing of your skin or eyes, dark urine or pain in your abdomen.	Liver problems are very rare. Tell your doctor immediately or phone Healthline free on 0800 611 116.
For more information on side effects, see the Medsafe consumer information leaflets Glucobay and Accarb. Did you know that you can report a side effect to a medicine to CARM (Centre for Adverse Reactions Monitoring)? Report a side effect to a product

Interactions

Acarbose may interact with a few medications and herbal supplements, so check with your doctor or pharmacist before starting acarbose or before starting any new medicines.