Metformin Bluefish (Metformin Hydrochloride)

Metformin Bluefish belongs to the biguanide class and is used to manage disorders of glucose metabolism.

• Type 2 diabetes mellitus (adult): lowers fasting and post‑prandial blood glucose levels.
• Type 2 diabetes mellitus (pediatric, ≥10 years): improves glycaemic control in eligible children.
• Prediabetes (impaired fasting glucose): helps delay progression to overt diabetes.

• Metformin Hydrochloride decreases hepatic gluconeogenesis, enhances peripheral insulin sensitivity, and increases glucose uptake in muscle and adipose tissue. By activating AMP‑activated protein kinase (AMPK), it reduces intestinal glucose absorption and improves lipid metabolism, resulting in lower circulating glucose concentrations.

Metformin Bluefish may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Nausea: mild to moderate upset stomach.
• Diarrhea: loose stools, often early in therapy.
• Abdominal discomfort: cramping or bloating.
• Metallic taste: transient alteration in taste perception.
• Loss of appetite: reduced desire to eat.
• Flatulence: increased intestinal gas.

Serious or Rare Side Effects

• Lactic acidosis: rare but life‑threatening metabolic acidosis.
• Severe hypoglycaemia: when combined with insulin or sulfonylureas.
• Vitamin B12 deficiency: may develop with long‑term use.
• Hepatic dysfunction: elevated liver enzymes.
• Severe skin reactions: such as Stevens‑Johnson syndrome.
• Acute renal failure: especially in patients with pre‑existing kidney disease.

When prescribing Metformin Bluefish, clinicians should consider several safety aspects.

• Renal function: assess eGFR before initiation and periodically thereafter.
• Hepatic disease: avoid in patients with severe liver impairment.
• Alcohol consumption: limit intake to reduce lactic acidosis risk.
• Lactic acidosis risk: monitor for unexplained fatigue, myalgia, or respiratory distress.
• Pregnancy and lactation: use only if clearly needed after professional evaluation.
• Store at ambient temperature: keep in the original pack, protect from moisture and heat.

Metformin Bluefish can interact with other medicines, altering its efficacy or safety.

Major Interactions (Avoid)

• Iodinated contrast agents: may precipitate acute renal failure.
• Cimetidine: can increase metformin plasma concentrations.
• Excessive alcohol: raises risk of lactic acidosis.

Moderate Interactions (Monitor Closely)

• Beta‑blockers: may mask hypoglycaemia symptoms.
• ACE inhibitors or ARBs: can affect renal function.
• Diuretics: may reduce renal clearance of metformin.
• Other antidiabetic agents: increase hypoglycaemia potential.