Understanding common side effects

The chart below outlines the most common side effects people may have when taking HARVONI and tips that may help manage them.

Most common side effects

Tiredness

Tips:

  • Do your hardest chores when you have the most energy
  • Take short nap—20 minutes or less, and not close to bedtime

Headache

Tips:

  • Drink water. Limit coffee, tea, and soda with caffeine
  • Try to rest and relax

Weakness

Tips:

  • Eat well-balanced meals every day
  • Make sure you stay hydrated

These are not all the possible side effects of HARVONI. For more information, ask your healthcare provider or pharmacist. Tell your healthcare provider if you have any side effect that bothers you or does not go away.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

HARVONI is a prescription medicine used to treat adults with chronic (lasting a long time) hepatitis C (Hep C) genotype (GT) 1, 4, 5 or 6 infection with or without cirrhosis (compensated). In those with GT 1 and advanced cirrhosis (decompensated) or with GT 1 or 4 with or without cirrhosis (compensated) who have had a liver transplant, HARVONI is used with ribavirin.

Important Safety Information

What is the most important information I should know about HARVONI?

HARVONI can cause serious side effects, including:

  • Hepatitis B virus reactivation: Before starting HARVONI treatment, your healthcare provider will do blood tests to check for hepatitis B infection. If you have ever had hepatitis B, the hepatitis B virus could become active again during and after treatment with HARVONI. This may cause serious liver problems, including liver failure and death. If you are at risk, your healthcare provider will monitor you during and after taking HARVONI.

What should I tell my healthcare provider before taking HARVONI?

  • Tell your healthcare provider about all of your medical conditions, including if you have ever had hepatitis B infection, liver problems other than hepatitis C infection, or a liver transplant; if you have severe kidney problems or are on dialysis; if you have HIV; or if you are pregnant or breastfeeding or plan to become pregnant or breastfeed. It is not known if HARVONI will harm your unborn baby or pass into your breast milk. If you take HARVONI with ribavirin, you should also read the ribavirin Medication Guide for important pregnancy-related information.
  • Tell your healthcare provider and pharmacist about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. HARVONI and certain other medicines may affect each other, or may cause side effects.

What are the possible side effects of HARVONI?

Serious side effects may also include:

  • Slow heart rate (bradycardia): HARVONI, when taken with amiodarone (Cordarone®, Nexterone®, Pacerone®), a medicine used to treat certain heart problems, may cause slow heart rate, which in some cases has led to death or the need for a pacemaker. Get medical help right away if you take amiodarone with HARVONI and get any of the following symptoms: fainting or near-fainting, dizziness or lightheadedness, not feeling well, weakness, extreme tiredness, shortness of breath, chest pains, confusion, or memory problems.

The most common side effects of HARVONI include tiredness, headache and weakness.

Please see Important Facts about HARVONI including Important Warning.

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HARVONI is a prescription medicine used to treat adults with chronic (lasting a long time) hepatitis C (Hep C) genotype (GT) 1, 4, 5 or 6 infection with or without cirrhosis (compensated). In those with GT 1 and advanced cirrhosis (decompensated) or with GT 1 or 4 with or without cirrhosis (compensated) who have had a liver transplant, HARVONI is used with ribavirin.

Important Safety Information

What is the most important information I should know about HARVONI?

HARVONI can cause serious side effects, including:

  • Hepatitis B virus reactivation: Before starting HARVONI treatment, your healthcare provider will do blood tests to check for hepatitis B infection. If you have ever had hepatitis B, the hepatitis B virus could become active again during and after treatment with HARVONI. This may cause serious liver problems, including liver failure and death. If you are at risk, your healthcare provider will monitor you during and after taking HARVONI.

What should I tell my healthcare provider before taking HARVONI?

  • Tell your healthcare provider about all of your medical conditions, including if you have ever had hepatitis B infection, liver problems other than hepatitis C infection, or a liver transplant; if you have severe kidney problems or are on dialysis; if you have HIV; or if you are pregnant or breastfeeding or plan to become pregnant or breastfeed. It is not known if HARVONI will harm your unborn baby or pass into your breast milk. If you take HARVONI with ribavirin, you should also read the ribavirin Medication Guide for important pregnancy-related information.
  • Tell your healthcare provider and pharmacist about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. HARVONI and certain other medicines may affect each other, or may cause side effects.

What are the possible side effects of HARVONI?

Serious side effects may also include:

  • Slow heart rate (bradycardia): HARVONI, when taken with amiodarone (Cordarone®, Nexterone®, Pacerone®), a medicine used to treat certain heart problems, may cause slow heart rate, which in some cases has led to death or the need for a pacemaker. Get medical help right away if you take amiodarone with HARVONI and get any of the following symptoms: fainting or near-fainting, dizziness or lightheadedness, not feeling well, weakness, extreme tiredness, shortness of breath, chest pains, confusion, or memory problems.

The most common side effects of HARVONI include tiredness, headache and weakness.

Please see Important Facts about HARVONI including Important Warning.