Acarbose is a complex oligosaccharide that acts as an inhibitor of several enzymes responsible for the breakdown of complex carbohydrates in the intestines. It inhibits both pancreatic alpha-amylase and membrane-bound alpha-glucosidases - including intestinal glucoamylase, sucrase, maltase, and isomaltase - which are responsible for the metabolism of complex starches and oligo-, tri-, and disaccharides into absorbable simple sugars. By inhibiting the activity of these enzymes, acarbose limits the absorption of dietary carbohydrates and the subsequent postprandial increase in blood glucose and insulin levels. Acarbose is therefore used in conjunction with diet, exercise, and other pharmacotherapies for the management of blood sugar levels in patients with type 2 diabetes.
Acarbose is one of only two approved alpha-glucosidase inhibitors (the other being miglitol), receiving its first FDA approval in 1995 under the brand name Precose (since discontinued). This class of antidiabetic therapy is not widely used due to their relatively modest impact on A1c, their requirement for thrice-daily dosing, and the potential for significant gastrointestinal adverse effects.
Acarbose is indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.
National Taiwan University Hospital Department of Internal Medicine,, Taipei, Taiwan
Université de Sherbrooke, Sherbrooke, Quebec, Canada
Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
Nanfang Hospital, the Affiliated South Hospital of the Southern Medical University, Guangzhou, China
Peiking University First Hospital, BeiJing, China
People's Liberation Army. The Military General Hospital of BeiJing, BeiJing, China
Dept. of Intern. Med., School of Dentistry, Aichi Gakuin University, Nagoya, Japan
Yale School of Medicine, New Haven, Connecticut, United States
Shanghai Zhabei District Shibei Hospital, Shanghai, Shanghai, China
China Meitan General Hospital, Beijing, Beijing, China
Peking University First Hospital, Beijing, Beijing, China
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