Glucophage is the brand name for metformin, an oral antihyperglycemic medication commonly prescribed for type 2 diabetes mellitus. It functions by decreasing hepatic glucose production through suppression of gluconeogenesis and enhancing peripheral insulin sensitivity. The drug also improves peripheral glucose uptake and utilization without stimulating insulin secretion from pancreatic beta cells. Metformin increases the activity of amp-activated protein kinase, leading to downstream signaling that reduces carbohydrate absorption and alters intestinal absorption of glucose. These combined actions result in lowered fasting and postprandial blood glucose levels while preserving cardiovascular safety compared with many older agents. The medication's primary therapeutic purpose is to improve glycemic control in patients with type 2 diabetes when lifestyle modifications alone are insufficient.

Glucophage is the brand name for the drug metformin, which is used to treat type 2 diabetes. It belongs to a class of medications called biguanides that lower blood glucose by reducing hepatic glucose production. Metformin decreases intestinal absorption of glucose and enhances insulin sensitivity in peripheral tissues. The drug activates amp-activated protein kinase, a cellular energy sensor that regulates metabolism. Activation of this kinase leads to inhibition of gluconeogenic enzymes in the liver, thereby lowering fasting glucose levels. By improving peripheral glucose uptake, metformin promotes more efficient use of circulating glucose by muscle and adipose tissue. These combined actions result in a modest reduction of circulating insulin levels and a decreased risk of hyperglycemia. Overall the medication is considered safe for most patients, works without causing hypoglycemia, and serves as a first-line therapy for type 2 diabetes.

Glucophage may cause stomach upset in some patients. Nausea can occur after taking the medication. Diarrhea is a possible side effect. Some people experience abdominal discomfort. A metallic taste in the mouth has been reported. Rarely, the drug can lead to a vitamin b12 deficiency. Most users tolerate the medication well.

Glucophage is commonly associated with gastrointestinal discomfort such as nausea and abdominal cramping. Some users experience diarrhea or loose stools, especially when the dosage is increased. A metallic taste in the mouth is reported by a minority of patients. Occasional loss of appetite may occur during treatment. Mild skin reactions such as rash or itching have been noted in rare cases. Fatigue or general weakness can be experienced, though it is not a primary effect. These side effects are generally mild and often improve with continued use.