Metfo XR 500

Metfo XR 500 Tablet — Metformin Hydrochloride (Extended Release)

Overview

Metfo XR 500 is an extended-release metformin tablet from Pacific Pharmaceuticals Ltd., formulated for once-daily dosing convenience with steadier blood levels and typically improved gastrointestinal tolerability compared to immediate-release tablets.

Mechanism of Action

Metformin reduces hepatic glucose production, decreases intestinal glucose absorption, and improves peripheral insulin sensitivity. The extended-release formulation releases the drug gradually over several hours, supporting once-daily dosing.

Indications

Metfo XR 500 is indicated for type 2 diabetes mellitus, particularly suited to patients who prefer once-daily dosing or who experience gastrointestinal side effects with immediate-release metformin.

Dosage and Administration

Typically taken once daily with the evening meal; extended-release tablets must be swallowed whole and never crushed, split, or chewed.

Contraindications

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

Side Effects

Generally better gastrointestinal tolerability than immediate-release formulations, though nausea, diarrhea, or abdominal discomfort can still occur. Long-term use may reduce vitamin B12 absorption.

Drug Interactions

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

Special Precautions

Patients may occasionally notice the tablet matrix in stool; this is expected and does not indicate reduced effectiveness. Renal function should be monitored periodically.

Storage

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

Frequently Asked Questions

Q1: Why might my doctor switch me to Metfo XR instead of regular Metfo?
Extended-release formulations offer once-daily convenience and often cause fewer gastrointestinal side effects.

Q2: Can I take Metfo XR 500 in the morning instead of evening?
Follow your physician's specific instructions; evening dosing with the main meal is commonly recommended but individual schedules can vary.

Q3: Is it safe to see tablet remnants in my stool?
Yes, the inert tablet matrix may occasionally be visible in stool after the medication has been absorbed; this is not a cause for concern.

Q4: Can Metfo XR 500 replace two regular Metfo 500 doses?
Your physician will determine the appropriate extended-release dosing schedule; do not substitute formulations without medical guidance.

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.