Metformin Hydrochloride Sandoz Gmbh (Metformin Hydrochloride)

Metformin Hydrochloride is a biguanide that lowers blood glucose in disorders of glucose metabolism.

• Type 2 diabetes mellitus: improves blood glucose control and reduces HbA1c levels.
• Prediabetes (impaired fasting glucose): helps delay progression to overt diabetes when combined with lifestyle measures.
• Polycystic ovary syndrome: may improve insulin resistance and assist in restoring ovulatory function.

• Metformin Hydrochloride penetrates hepatocytes and activates AMP‑activated protein kinase (AMPK). Activation of AMPK suppresses gluconeogenic gene expression, thereby decreasing hepatic glucose output. It also reduces glucose absorption in the intestinal lumen and enhances insulin‑mediated glucose uptake in skeletal muscle and adipose tissue, collectively improving peripheral insulin sensitivity without directly stimulating insulin secretion.

Metformin Hydrochloride can be associated with a range of adverse reactions, varying from mild to serious.

Common Side Effects

• Gastrointestinal upset: nausea, abdominal discomfort, and diarrhea.
• Metallic taste: transient alteration in taste perception.
• Weight loss: modest reduction in body weight.
• Vitamin B12 deficiency: decreased absorption with long‑term use.

Serious or Rare Side Effects

• Lactic acidosis: rare but potentially fatal metabolic acidosis.
• Severe hypoglycemia: usually when combined with other glucose‑lowering agents.
• Hepatotoxicity: abnormal liver enzymes in rare cases.
• Skin reactions: severe rash or Stevens‑Johnson syndrome.

When prescribing Metformin Hydrochloride, clinicians should consider several precautionary measures to ensure safe use.

• Renal function: assess creatinine clearance before initiation and periodically thereafter.
• Hepatic disease: avoid in patients with significant liver impairment.
• Cardiovascular status: use cautiously in patients with unstable heart failure.
• Alcohol consumption: limit intake to reduce risk of lactic acidosis.
• Pregnancy and lactation: evaluate risk‑benefit; use only if clearly needed.
• Store at ambient temperature: keep below 25 °C, retain in original container, protect from moisture and light.

Metformin Hydrochloride may interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Iodinated contrast agents: can precipitate acute kidney injury, increasing lactic acidosis risk.
• Cimetidine: may raise metformin plasma concentrations.
• Nucleoside reverse transcriptase inhibitors (e.g., didanosine): increase risk of lactic acidosis.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: monitor renal function and potassium levels.
• Diuretics: assess for dehydration and renal impairment.
• Beta‑blockers: watch for masked hypoglycemia symptoms.
• Oral corticosteroids: may raise blood glucose, requiring dose adjustment.