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Fosbu V (Sofosbuvir + Velpatasvir) Dosage Guide in Pakistan

Taking the correct dose of Fosbu V is the most important factor for HCV cure (Sustained Virologic Response). This medicine is always taken under a hepatologist's supervision. This guide provides complete information on the adult dose, cirrhosis dose, missed dose, and overdose.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-06-17

Dosage Guide

Quick Answer

The standard adult dose of Fosbu V (Sofosbuvir 400mg + Velpatasvir 100mg) is one tablet once daily for 12 weeks for most HCV genotypes. Patients with decompensated cirrhosis take Fosbu V plus weight-based Ribavirin, sometimes extended to 24 weeks. Always follow your hepatologist's prescription — never change or stop the dose independently.

Dose at a Glance

Adult Dose

One tablet (Sofosbuvir 400mg + Velpatasvir 100mg) once daily

Once daily

Max: One tablet per day — dose escalation is not approved

Child Dose (Paediatric use is decided by a specialist)

As prescribed by specialist — paediatric dosing is weight-based and age-dependent

As directed by hepatologist

Missed Dose

If a dose is missed, take it on the same day as soon as you remember. If the next dose is less than 12 hours away, skip the missed dose and return to the regular schedule. Never take a double dose. Daily adherence is the biggest determinant of SVR in HCV treatment — even one missed dose can affect the course outcome, so set a daily reminder.

Overdose

In case of overdose, contact a doctor or emergency room immediately. Overdose of Fosbu V is rare but seek immediate medical attention for any unusual symptom — such as heart palpitations, extreme fatigue, or jaundice.

Fosbu V (Sofosbuvir + Velpatasvir) Dosage (Kitni leni hai)

The correct dose and treatment duration of Fosbu V are fundamental for Hepatitis C cure. This medicine is always prescribed by a hepatologist — starting or stopping it on your own can be dangerous.

Adult Dose (Baalgon ke liye)

Dose: One tablet (Sofosbuvir 400mg + Velpatasvir 100mg) once daily
Duration (Non-cirrhotic / Compensated cirrhosis): 12 weeks
Duration (Decompensated cirrhosis + Ribavirin): 12–24 weeks
Do not exceed the recommended limit
If a dose is missed, take it as soon as you remember. If the next dose is less than 12 hours away, skip the missed dose. Never take a double dose.

Starting Dose: Start as per the hepatologist's prescription — one tablet daily

Usual Dose: One tablet once daily — at the same time every day

Max Daily Dose: One tablet per day — dose escalation is not approved

Child Dose (Bachon ke liye)

Paediatric HCV treatment is weight-based and age-dependent. The dose for children is always decided by a specialist hepatologist — do not calculate it yourself.

How to Take (Kaise leni hai)

Once daily — as per the hepatologist's instructions
Same time
Morning preferred
With or without food — both are fine; maintain a 4-hour gap from antacids

Best Time to Take (Kab leni chahiye)

Morning — easier to maintain a safe gap from antacids and acid-reducers
Daily same time — maintain routine; adherence is the number one factor for SVR

With Food or Empty Stomach (Khali pait ya khane ke baad)

Fosbu V can be taken with or without food. If there is nausea, taking it after food is better. Always maintain at least a 4-hour gap from antacids (aluminum, magnesium-based) — antacids reduce Sofosbuvir absorption.

Missed Dose (Dose chhoot jaye to kya karein)

If a dose is missed, take it on the same day as soon as you remember. If the next dose is less than 12 hours away, skip the missed dose and return to the normal schedule. Never take a double dose. Every dose in HCV treatment is important — setting a daily reminder is strongly recommended.

Overdose (Zyada Dose)

If an excess dose was taken or someone took it accidentally, contact a doctor or nearest emergency room immediately. Do not delay for any unusual symptom — heart palpitations, extreme fatigue, jaundice.

Dose Summary Table

Patient	Dose	Duration	Notes
Adult — non-cirrhotic	1 tablet once daily	12 weeks	Mono-therapy
Adult — compensated cirrhosis (Child-Pugh A)	1 tablet once daily	12 weeks	Mono-therapy
Adult — decompensated cirrhosis (Child-Pugh B/C)	1 tablet once daily + Ribavirin (weight-based)	12–24 weeks	Hepatologist decides
Child	Weight-based — specialist prescribed	As directed	Specialist only

The information in this guide is for educational purposes only. Always confirm the dose with your hepatologist or pharmacist.

Frequently Asked Questions

Sofosbuvir velpatasvir kaise lena hai — daily dose kya hai?

The standard dose is one tablet once daily. Maintain a 4-hour gap from antacids. Do not increase or decrease the dose without a hepatologist's prescription.

Treatment 12 hafte ka hai ya 24 hafte ka?

For most HCV genotypes, treatment is 12 weeks. In decompensated cirrhosis (Child-Pugh B/C), the hepatologist decides 12 or 24 weeks with Ribavirin.

Kya dose miss karna HCV cure ko affect karta hai?

Yes — daily adherence is the biggest factor for SVR. Missed doses can reduce treatment effectiveness or increase drug resistance. Set a daily alarm/reminder and inform your hepatologist if doses are regularly missed.

Kya Fosbu V khali pait leni chahiye?

Fosbu V can be taken on an empty stomach or after food — food does not significantly affect absorption. Always maintain a 4-hour gap from antacids. If there is nausea, taking it after food is better.

Fosbu V band karne ka sahi waqt kab hai?

Stop after the hepatologist-prescribed course is complete. Do NOT stop on your own midway — the risk of viral relapse and drug resistance increases. Completing the full course is the most important step for HCV cure.

Sources

DRAP Registered Products Database — Drug Regulatory Authority of Pakistan
WHO Model List of Essential Medicines, 23rd ed. (2023) — World Health Organization
British National Formulary (BNF) — BMJ Group & Pharmaceutical Press

Medical disclaimer

This page is for educational use only and does not replace professional medical advice. Always confirm diagnosis, dose, and interactions with a qualified doctor or pharmacist before starting or changing any medicine.