Medical emergency? Call 911. · Educational portal — not medical or legal advice · Disclaimer

Medication guide

Acarbose: uses, appearance and warnings

What the official FDA label says Acarbose is used for, what it looks like, and its most important warnings — in plain English, with the label text one click away.
alpha-Glucosidase InhibitorPrescription label

Uses

What the official label says Acarbose is used for

The FDA label for Acarbose states:

Acarbose Tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.
Read the label's “Indications and usage” section (verbatim)
Acarbose Tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.

Names & forms

Brand names, forms and strengths

Brand names (from RxNorm; not every brand is still sold): Precose.

Generic name: acarbose · RxNorm ID (RxCUI): 16681

Forms and strengths of Acarbose listed in RxNorm
FormStrengths listed in RxNorm
Oral Tablet25 MG, 50 MG, 100 MG

Strengths are listed so you can recognise a product — not as dosing information. Only your prescriber can decide what is right for you.

Appearance

What Acarbose looks like

Illustration: white to yellow-tinged round tablet, imprint P210 25P210 25

acarbose 25 mg
Strides Pharma Science Limited

Illustration: white to yellow-tinged round tablet, imprint P211 50P211 50

acarbose 50 mg
Strides Pharma Science Limited

Illustration: white to yellow-tinged round tablet, imprint P212 100P212 100

acarbose 100 mg
Strides Pharma Science Limited

Illustration: white round tablet

acarbose 25 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.

Illustration: white round tablet

acarbose 50 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.

Illustration: white round tablet

acarbose 100 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.

Illustration based on label data — not a photo; appearance varies by manufacturer. Confirm with your pharmacist.
Appearance of Acarbose products from DailyMed product data
StrengthFormColourShapeSizeImprintScoreLabeler
acarbose 25 mgtabletwhite“white to yellow-tinged”round6 mmP210 · 251Strides Pharma Science Limited
acarbose 50 mgtabletwhite“white to yellow-tinged”round7 mmP211 · 501Strides Pharma Science Limited
acarbose 100 mgtabletwhite“white to yellow-tinged”round9 mmP212 · 1001Strides Pharma Science Limited
acarbose 25 mgtabletwhiteround6 mm—1Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
acarbose 50 mgtabletwhiteround7 mm—1Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
acarbose 100 mgtabletwhiteround9 mm—1Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
acarbose 25 mgtabletwhiteround6 mmHP · 1471Chartwell RX, LLC
acarbose 50 mgtabletwhiteround7 mmHP · 1481Chartwell RX, LLC
acarbose 100 mgtabletwhiteround9 mmHP · 1491Chartwell RX, LLC
acarbose 25 mgtabletwhiteround6 mm54 · 3111Hikma Pharmaceuticals USA Inc.
acarbose 50 mgtabletwhiteround7 mm54 · 7371Hikma Pharmaceuticals USA Inc.
acarbose 100 mgtabletwhiteround9 mm54 · 2511Hikma Pharmaceuticals USA Inc.

From the product data in each manufacturer's label on DailyMed. Many companies make Acarbose, so your medicine may look different from any shown here. If a pill looks unfamiliar, ask your pharmacist before taking it.

Read the label's “How supplied” section (verbatim)
Acarbose Tablets are available as 25 mg, 50 mg or 100 mg, circular biconvex tablets. Each tablet strength is white to yellow-tinged in color. The 25 mg tablet is engraved with 'P210' on one side and '25' on the other side. The 50 mg tablet is engraved with 'P211' on one side and '50' on the other side. The 100 mg tablet is engraved with 'P212' on one side and '100' on the other side. Acarbose Tablets are available in bottles of 100 and bottles of 1000. Strength NDC Tablet Identification 25 mg 64380-758-06 P210 25 Bottles of 100 50 mg 64380-759-06 P211 50 100 mg 64380-760-06 P212 100 Store at 20˚ to 25˚C (68˚ to 77˚F) [see USP Controlled Room Temperature]. Protect from moisture. Keep container tightly closed.

Safety

Important warnings for Acarbose

Contraindications — who should not use it (verbatim)
Acarbose Tablets are contraindicated in patients with known hypersensitivity to the drug. Acarbose Tablets are contraindicated in patients with diabetic ketoacidosis or cirrhosis. Acarbose Tablets are also contraindicated in patients with inflammatory bowel disease, colonic ulceration, partial intestinal obstruction or in patients predisposed to intestinal obstruction. In addition, Acarbose Tablets are contraindicated in patients who have chronic intestinal diseases associated with marked disorders of digestion or absorption and in patients who have conditions that may deteriorate as a result of increased gas formation in the intestine.
Side effects — opening of the label's adverse reactions section
Digestive Tract Gastrointestinal symptoms are the most common reactions to Acarbose Tablets. In U.S. placebo-controlled trials, the incidences of abdominal pain, diarrhea, and flatulence were 19%, 31%, and 74% respectively in 1255 patients treated with Acarbose Tablets 50-300 mg t.i.d., whereas the corresponding incidences were 9%, 12%, and 29% in 999 placebo-treated patients. In a one-year safety study, during which patients kept diaries of gastrointestinal symptoms, abdominal pain and diarrhea tended to return to pretreatment levels over time, and the frequency and intensity of flatulence tended to abate with time. The increased gastrointestinal tract symptoms in patients treated with Acarbose Tablets are a manifestation of the mechanism of action of Acarbose Tablets and are related to the presence of undigested carbohydrate in the lower GI tract. …
Drug interactions — opening of the label's section
Certain drugs tend to produce hyperglycemia and may lead to loss of blood glucose control. These drugs include the thiazides and other diuretics, corticosteroids, phenothiazines, thyroid products, estrogens, oral contraceptives, phenytoin, nicolinic acid, sympathomimetics, calcium channel-blocking drugs, and isoniazid. When such drugs are administered to a patient receiving Acarbose Tablets, the patient should be closely observed for loss of blood glucose control. When such drugs are withdrawn from patients receiving Acarbose Tablets in combination with sulfonylureas or insulin, patients should be observed closely for any evidence of hypoglycemia. Patients Receiving Sulfonylureas or Insulin: Sulfonylurea agents or insulin may cause hypoglycemia. …

This is not a complete list of warnings or side effects. Read the full label and talk to your prescriber or pharmacist. To report a side effect to the FDA, use MedWatch.

Resources

If you were hurt at work

Whether a medicine is right for you is a decision for your prescriber. If you were injured on the job, these educational guides explain the next steps and who can help.

Sources

Label text is quoted from the Strides Pharma Science Limited label (label version effective July 15, 2026), retrieved October 20, 2026. Other manufacturers' labels for the same medicine may differ in wording.

If anything here differs from the label that came with your medicine, follow your label and your pharmacist.

Prescriptions.plus is an educational portal. We are not a pharmacy, law firm, medical provider, insurer or claims administrator, and nothing here is medical or legal advice. Educational purposes only. This page does not tell you whether to take a medicine or how much to take. Medical emergency? Call 911. Poison emergency: call Poison Control at 1-800-222-1222.