Metformine Bgr (Metformin Hydrochloride)

Metformin Hydrochloride is used in the management of disorders related to glucose metabolism, primarily type 2 diabetes mellitus.

• Type 2 diabetes mellitus: improves glycemic control by lowering fasting and post‑prandial blood glucose levels.
• Prediabetes: helps delay progression to overt diabetes by enhancing insulin sensitivity.
• Polycystic ovary syndrome: used off‑label to improve insulin resistance and restore ovulatory function.

• Metformin Hydrochloride reduces hepatic gluconeogenesis and increases peripheral glucose uptake by activating AMP‑activated protein kinase (AMPK). This leads to decreased hepatic glucose output and improved insulin sensitivity in muscle and adipose tissue, resulting in lower circulating blood glucose concentrations.

Metformin is associated with a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

• Nausea: mild to moderate gastrointestinal upset.
• Diarrhea: frequent loose stools, especially during treatment initiation.
• Abdominal discomfort: cramping or bloating.
• Metallic taste: transient alteration in taste perception.
• Weight loss: modest reduction in body weight.
• Vitamin B12 deficiency: gradual decrease with long‑term use.

Serious or Rare Side Effects

• Lactic acidosis: rare but life‑threatening metabolic acidosis.
• Severe hypoglycemia: when combined with insulin or sulfonylureas.
• Hepatic dysfunction: elevated liver enzymes in susceptible individuals.
• Skin rash or hypersensitivity: including Stevens‑Johnson syndrome.
• Pancreatitis: inflammation of the pancreas.
• Electrolyte imbalance: especially in renal impairment.

Metformin requires careful monitoring in several clinical situations.

• Renal function monitoring: assess creatinine clearance before initiation and periodically thereafter.
• Hepatic assessment: evaluate liver enzymes in patients with existing liver disease.
• Vitamin B12 surveillance: consider periodic testing during long‑term therapy.
• Cardiovascular status: avoid in patients with unstable or acute heart failure.
• Elderly patients: start at lower doses and monitor for accumulation.
• Store at room temperature: keep in the original container, protect from moisture and heat.

Metformin may interact with a variety of medicines, altering its efficacy or safety.

Major Interactions (Avoid)

• Iodinated contrast agents: increase risk of acute renal failure and lactic acidosis.
• Alcohol: potentiates lactic acidosis, especially with chronic intake.
• Cimetidine: can raise metformin plasma concentrations.
• Certain antiretrovirals (e.g., didanosine): elevate risk of lactic acidosis.

Moderate Interactions (Monitor Closely)

• Beta‑blockers: may mask hypoglycemia symptoms.
• Diuretics: affect renal clearance, requiring dose adjustment.
• ACE inhibitors/ARBs: monitor renal function and electrolytes.
• Thyroid hormones: may influence glycemic control, requiring closer glucose monitoring.