Metformina Sandoz (Metformin Hydrochloride)

Metformina Sandoz is a biguanide antidiabetic used to manage hyperglycaemia in the type 2 diabetes mellitus pathway.

• Type 2 diabetes mellitus: improves glycaemic control by lowering fasting and post‑prandial blood glucose levels.

• Metformin reduces hepatic gluconeogenesis, decreases intestinal glucose absorption, and enhances peripheral insulin sensitivity by activating AMP‑activated protein kinase (AMPK) and inhibiting mitochondrial respiratory‑chain complex I, leading to lower circulating glucose without stimulating insulin secretion.

Metformina Sandoz may cause a range of adverse reactions. Patients should be aware of both frequent and rare events.

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Diarrhoea: loose stools, often transient.
• Abdominal discomfort: cramping or pain.
• Metallic taste: altered taste perception.
• Weight loss: modest reduction in body weight.
• Vitamin B12 deficiency: decreased absorption over long‑term use.

Serious or Rare Side Effects

• Lactic acidosis: rare but life‑threatening metabolic acidosis.
• Severe hypoglycaemia: especially when combined with insulin or sulfonylureas.
• Hepatic dysfunction: elevated liver enzymes or hepatitis.
• Allergic skin reactions: rash, urticaria, or Stevens‑Johnson syndrome.
• Pancreatitis: inflammation of the pancreas.
• Electrolyte disturbances: especially with concomitant diuretics.

Before initiating Metformina Sandoz, clinicians should evaluate patient‑specific risk factors and monitor therapy.

• Renal function assessment: check eGFR and adjust or avoid use in severe renal impairment.
• Lactic acidosis risk: avoid in patients with significant hepatic disease, heart failure, or hypoxia.
• Alcohol consumption: limit intake to reduce acidosis risk.
• Pregnancy and lactation: use only if potential benefit justifies potential risk.
• Drug interactions: review concomitant medicines for possible interactions.
• Store at ambient temperature: keep in original container, protect from moisture and heat.

Metformina Sandoz can interact with several medicines, requiring attention to avoid adverse outcomes.

Major Interactions (Avoid)

• Iodinated contrast media: may precipitate lactic acidosis; discontinue before imaging.
• Cimetidine: can increase metformin plasma concentrations.
• Nitrates: combined use may cause severe hypotension.

Moderate Interactions (Monitor Closely)

• Beta‑blockers: increase risk of hypoglycaemia; monitor glucose levels.
• Thiazide diuretics: may affect renal function and electrolytes; assess regularly.
• ACE inhibitors/ARBs: monitor renal function and serum creatinine.