Comet 500 mg Tablet - Metformin for Type 2 Diabetes Bangladesh

Comet 500 mg Tablet — Metformin Hydrochloride

Overview

Comet 500 mg is manufactured by Square Pharmaceuticals PLC., one of Bangladesh's largest and most established pharmaceutical companies, offering standard-dose metformin for first-line type 2 diabetes management. Its widespread availability and manufacturing scale make it a commonly prescribed option across the country.

Mechanism of Action

Metformin reduces hepatic glucose production, decreases intestinal glucose absorption, and improves peripheral insulin sensitivity in muscle and fat tissue. It does not directly stimulate pancreatic insulin secretion, keeping hypoglycemia risk low during monotherapy.

Indications

Comet 500 mg is indicated for type 2 diabetes mellitus as first-line therapy alongside diet and exercise, and may be combined with other oral antidiabetic agents or insulin as advised by a physician.

Dosage and Administration

The typical starting dose is 500 mg once or twice daily with meals, gradually titrated upward as tolerated, with maintenance doses commonly between 1500–2000 mg/day in divided doses. Maximum recommended dose is generally 2550 mg/day.

Contraindications

Contraindicated in patients with severe renal impairment (eGFR <30 mL/min/1.73m²), metabolic acidosis including diabetic ketoacidosis, and known hypersensitivity to metformin.

Side Effects

Common side effects include nausea, diarrhea, abdominal discomfort, and a metallic taste, usually mild and transient with continued use or gradual dose titration. Long-term use may reduce vitamin B12 absorption. Lactic acidosis is rare and occurs mainly in patients with predisposing renal or hepatic conditions.

Drug Interactions

Iodinated contrast media require temporary discontinuation of metformin due to acute kidney injury risk. Alcohol intake should be limited. Disclose all current medications and supplements to your physician or pharmacist.

Special Precautions

Renal function should be assessed before starting therapy and monitored periodically, particularly in elderly patients. Temporary discontinuation is advised during acute illness with dehydration or hypoxia risk.

Storage

Store below 30°C in a dry place, protected from light. Keep out of reach of children.

Frequently Asked Questions

Q1: Why is Comet 500 widely prescribed in Bangladesh?
It is manufactured by Square Pharmaceuticals PLC., a major and well-established local manufacturer, contributing to its wide availability and consistent supply.

Q2: Should Comet 500 be taken before or after meals?
It is generally taken with or just after meals to reduce gastrointestinal side effects.

Q3: How long does it take for Comet 500 to lower blood sugar?
Some glucose-lowering effect may be seen within days, but full benefit is typically assessed after several weeks of consistent use.

Q4: Can Comet 500 cause weight gain?
No, metformin is generally weight-neutral or may support modest weight loss, unlike some other antidiabetic medications.

Medical Disclaimer: This information is provided for educational purposes only and does not replace professional medical advice. Always consult a registered physician or pharmacist before starting, stopping, or changing any medication. Dosage and suitability vary by individual health condition.