Precose Side Effects
Generic Name: acarbose
Note: This page contains side effects data for the generic drug acarbose. It is possible that some of the dosage forms included below may not apply to the brand name Precose.
Common side effects of Precose include: diarrhea, abdominal pain, and flatulence. See below for a comprehensive list of adverse effects.
For the Consumer
Applies to acarbose: oral tablet
As well as its needed effects, acarbose (the active ingredient contained in Precose) may cause unwanted side effects that require medical attention.
If any of the following side effects occur while taking acarbose, check with your doctor or nurse as soon as possible:Rare
- Yellow eyes or skin
Minor Side Effects
Some acarbose side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:More common:
- Abdominal or stomach pain
- bloated feeling or passing of gas
For Healthcare Professionals
Applies to acarbose: oral tablet
The most frequently reported adverse events include abdominal pain, diarrhea, and flatulence.[Ref]
Very common (10% or more): Abdominal pain (19%), diarrhea (31%), flatulence (74%)
Uncommon (0.1% to 1%): Nausea,, vomiting, dyspepsia
Postmarketing reports: Ileus/subileus, pneumatosis cystoides intestinalis[Ref]
In large-scale clinical trials, a majority of patients have complained of gastrointestinal (GI) side effects. GI side effects usually developed within the first few weeks of therapy, were usually mild to moderate in severity, and typically decreased over time. The most common GI side effects were due to the fermentation of unabsorbed carbohydrates and resultant gas production. The severity of GI symptoms may be decreased by dosage reduction and by avoidance of gas-producing foods and sucrose.
There have been rare postmarketing reports of pneumatosis cystoides intestinalis associated with alpha-glucosidase inhibitors including this drug. If suspected, discontinue therapy and perform appropriate diagnostic testing.[Ref]
Very common (10% or more): Serum transaminase elevations (14%)
Postmarketing reports: Fulminant hepatitis with fatal outcome, jaundice and/or hepatitis and associated liver damage[Ref]
Treatment-emergent elevations of AST and ALT to greater the upper limit of normal, greater than 1.8 x ULN) and greater than 3 x ULN have been observed in 14%, 6%, and 3% of patients in studies of up to 12 months with doses up to 300 mg 3 times a day. The elevations were more common in women and generally asymptomatic and reversible. Additionally, these elevations appear to be dose-related.
International postmarketing experience: There have been 62 reports of of serum transaminase elevations to greater than 500 international units/liter, 29 were associated with jaundice. Of these 62 cases, 41 were receiving treatment with 100 mg 3 times a day or greater, 33 of 45 patients for whom weight was reported weighed less than 60 kg. In the 59 cases for which follow-up was provided, 55 had improvement or resolution of hepatic abnormalities with drug discontinuation, in 2 cases the hepatic abnormalities remained unchanged. Five cases of fulminant hepatitis with fatal outcome have been reported in Japan.[Ref]
Frequency not reported: Small reductions in hematocrit
Postmarketing reports: Thrombocytopenia[Ref]
Frequency not reported: Acute generalized exanthematous pustulosis[Ref]
Postmarketing reports: Hypersensitivity skin reactions (e.g. rash, erythema, exanthema, urticaria)[Ref]
Postmarketing reports: Edema[Ref]
This drug when administered as monotherapy should not cause hypoglycemia, but when administered with other agents, it may increase the potential for hypoglycemia. Low serum calcium and low plasma vitamin B6 levels were associated with use of this drug, however, they are thought to be spurious or of no clinical significance.[Ref]
Frequency not reported: Hypoglycemia, low serum calcium, low plasma vitamin B6 levels[Ref]
1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
2. Cerner Multum, Inc. "Australian Product Information." O 0
3. "Product Information. Precose (acarbose)." Bayer, West Haven, CT.
It is possible that some side effects of Precose may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
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