Grazoprevir (grazoprevir) — Uses, Dosage, Side Effects & Safety

Drug class: Infectious & Communicable Diseases

Overview

Grazoprevir is an antiviral medication used in combination with elbasvir to treat chronic hepatitis C virus (HCV) infection in adults. It is effective against certain genotypes of HCV, helping to reduce the amount of virus in the body and prevent liver damage. Grazoprevir works by blocking a key enzyme (NS3/4A protease) that the hepatitis C virus needs to multiply. By stopping the virus from replicating, it helps your immune system clear the infection. Key points for patients: Grazoprevir is not used alone; it is always combined with elbasvir (as in the fixed-dose tablet Zepatier). It is important to take the medication exactly as prescribed and to complete the full course, even if you feel better. Missing doses can reduce the effectiveness of treatment.

Therapeutic uses

  • Chronic Hepatitis C Virus (HCV) infection
  • Genotype 1 HCV infection
  • Genotype 3 HCV infection
  • Genotype 4 HCV infection
  • Genotype 6 HCV infection

For related Grazoprevir guidance, compare Lopinavir, Valganciclovir and Sofosbuvir/Ledipasvir.

Common side effects

  • Headache
  • Nausea
  • Fatigue
  • Diarrhea
  • Insomnia
  • Anemia
  • Elevated liver enzymes

Frequently Asked Questions about Grazoprevir

What is grazoprevir used for?

Grazoprevir is used in combination with elbasvir to treat chronic hepatitis C infection in adults, helping to clear the virus from the body and prevent liver damage.

Can grazoprevir cure hepatitis C?

When taken as prescribed with elbasvir, grazoprevir can cure hepatitis C in most patients, as measured by sustained virologic response (SVR).

What should I do if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue your regular schedule. Do not double up doses.

Are there any foods or drinks I should avoid?

There are no specific food restrictions, but avoid alcohol as it may worsen liver problems.

Can I take grazoprevir if I have liver disease?

Grazoprevir should not be used in patients with moderate or severe liver impairment. Your doctor will assess your liver function before prescribing.

Is grazoprevir safe during pregnancy or breastfeeding?

There is limited data on use in pregnancy or breastfeeding. Discuss risks and benefits with your healthcare provider.

What are the most common side effects?

The most common side effects are headache, fatigue, and nausea. Serious side effects are rare but may include liver problems.

Related Grazoprevir information

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.