NZ Formulary

Viekira Pak (dasabuvir, ombitasvir, paritaprevir and ritonavir)

vee-kee-rah pak

What does it do?

Viekira Pak® is used to treat Hepatitis C virus infection.

How should you take it?

Take Viekira Pak® as directed on the pack with food and a glass of water. It is important to take it regularly. If you often forget to take it, it may not work as well. Keep taking it until the course is finished. Swallow the tablets whole, do not crush or chew them.

What if you forget a dose?

If you forget your morning tablets, take them when you remember on the same day. If that is after lunch, skip your evening tablet and go back to usual times the next day.

Can you take other medicines?

Viekira Pak® can react with many medicines, sometimes with severe results.

Tell your pharmacist or doctor about all medicines or treatments that you may be taking including vitamins, herbal products (e.g. St John’s Wort) or recreational drugs (e.g. ecstasy).

What side effects might you notice?

Side EffectsRecommended action

Symptoms of liver problems including: yellow skin or eyes, itching, dark urine, pale bowel motions, abdominal pain

Tell your doctor immediately

Headache, irritability, trouble sleeping, tiredness or weakness


Diarrhoea, nausea

Tell your doctor if troublesome

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

  • Tell your doctor if you have HIV, hepatitis B, or had an organ transplant.
  • Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.