Voxilaprevir

Voxilaprevir Uses, Dosage, Side Effects, Food Interaction and all others data.

Voxilaprevir is a Direct-Acting Antiviral (DAA) medication used as part of combination therapy to treat chronic Hepatitis C, an infectious liver disease caused by infection with Hepatitis C Virus (HCV). HCV is a single-stranded RNA virus that is categorized into nine distinct genotypes, with genotype 1 being the most common in the United States, and affecting 72% of all chronic HCV patients .

Voxilaprevir exerts its antiviral action by reversibly binding and inhibiting the NS3/4A serine protease of Hepatitis C Virus (HCV) . Following viral replication of HCV genetic material and translation into a single polypeptide, Nonstructural Protein 3 (NS3) and its activating cofactor Nonstructural Protein 4A (NS4A) are responsible for cleaving genetic material into the following structural and nonstructural proteins required for assembly into mature virus: NS3, NS4A, NS4B, NS5A, and NS5B . By inhibiting viral protease NS3/4A, voxilaprevir therefore prevents viral replication and function. Treatment options for chronic Hepatitis C have advanced significantly since 2011, with the development of Direct Acting Antivirals (DAAs) such as voxilaprevir.

Voxilaprevir has been available since July 2017 in a fixed dose combination product with sofosbuvir and velpatasvir as the commercially available product Vosevi. Vosevi is approved for the treatment of adult patients with chronic HCV infection with genotype 1, 2, 3, 4, 5, or 6 infection . Notably, Vosevi is approved for use in patients with genotypes 1-6 who have been previously treated with an NS5A inhibitor, or patients with genotypes 1a or 3 infection and have previously been treated with an HCV regimen containing sofosbuvir without an NS5A inhibitor . Prior to Vosevi, there were no approved retreatment options for patients who have previously received, and failed, a regimen containing an NS5A inhibitor for treatment of chronic HCV infection.

Voxilaprevir
Uses
Dosage
Side Effect
Precautions
Interactions
Uses during Pregnancy
Uses during Breastfeeding
Accute Overdose
Food Interaction
Half Life
Volume of Distribution
Clearance
Interaction With other Medicine
Contradiction
Storage

Trade Name	Voxilaprevir
Generic	Voxilaprevir
Voxilaprevir Other Names	Voxilaprevir
Type
Formula	C₄₀H₅₂F₄N₆O₉S
Weight	Average: 868.94 Monoisotopic: 868.345261104
Protein binding	Voxilaprevir is more than 99% bound to human plasma proteins .
Groups	Approved, Investigational
Therapeutic Class
Manufacturer
Available Country
Last Updated:	September 19, 2023 at 7:00 am

Uses

Voxilaprevir is a nonstructural protein 3 and 4a protease inhibitor used to treat Hepatitis C infections.

Vosevi (Voxilaprevir/Sofosbuvir/Velpatasvir) is approved for use in patients with genotypes 1-6 who have been previously treated with an NS5A inhibitor, or patients with genotypes 1a or 3 infection who have previously been treated with an HCV regimen containing Sofosbuvir without an NS5A inhibitor .

How Voxilaprevir works

Voxilaprevir exerts its antiviral action by reversibley binding and inhibiting the NS3/4A serine protease of Hepatitis C Virus (HCV) . Following viral replication of HCV genetic material and translation into a single polypeptide, Nonstructural Protein 3 (NS3) and its activating cofactor Nonstructural Protein 4A (NS4A) are responsible for cleaving genetic material into the following structural and nonstructural proteins required for assembly into mature virus: NS3, NS4A, NS4B, NS5A, and NS5B . By inhibiting viral protease NS3/4A, voxilaprevir therefore prevents viral replication and function.

Food Interaction

Avoid St. John's Wort. This herb induces CYP3A metabolism and may reduce serum levels of voxilaprevir.
Take separate from antacids. Take Vosevi (sofosbuvir, velpatasvir, and voxilaprevir) at least 4 hours before or after antacids. Antacids have been shown to reduce the serum levels of velpatasvir and may not impact voxilaprevir.
Take with food.

Elimination Route

When provided as the fixed dose combination product Vosevi with Sofosbuvir and Velpatasvir, voxilaprevir reaches a maximum concentration (Cmax) of 192 ng/mL at a maximum time (Tmax) of 4 hours post-dose .