Maraviroc can cause serious, life-threatening side effects. These include liver problems, skin reactions, and allergic reactions. An allergic reaction may happen before liver problems occur.
Stop taking maraviroc and contact your health care provider right away if you have any of the following symptoms:
Stop taking maraviroc and contact your health care provider right away if you develop a rash with any of the following symptoms:
Some people taking maraviroc have had heart problems, including heart attack (myocardial infarction).
While taking maraviroc, it is important to keep all of your appointments with your health care provider.
Maraviroc is a prescription medicine approved by the U.S. Food and Drug Administration (FDA) for the treatment of HIV infection in adults. Maraviroc is always used in combination with other anti-HIV medicines.
Maraviroc is a type of anti-HIV medicine called a CCR5 receptor antagonist (a type of entry inhibitor). A CCR5 receptor is a protein located on the surface of certain immune cells. In some people, HIV binds to the CCR5 receptor to enter cells. Maraviroc works by blocking the CCR5 receptors on healthy immune cells. This prevents HIV from entering and infecting the cells. When used with other anti-HIV medicines, maraviroc may lower the amount of HIV in the blood.
Maraviroc should be used only in people whose strain of HIV uses the CCR5 receptor. Maraviroc is not recommended for people whose HIV uses another receptor called CXCR4 or whose HIV uses both the CCR5 and CXCR4 receptors. Your health care provider will do a blood test to see whether your HIV uses only the CCR5 receptor.
Maraviroc does not cure HIV/AIDS. It is not known if maraviroc reduces the risk of passing HIV to other people.
Before taking maraviroc, tell your health care provider:
Maraviroc comes in tablet form in two strengths:
Take maraviroc according to your health care provider’s instructions.
Take maraviroc with or without food. Swallow maraviroc tablets whole. Do not chew the tablets.
Always take maraviroc in combination with other anti-HIV medicines.
If you take too much maraviroc, contact your local poison control center (1-800-222-1222) or go to the nearest hospital emergency room right away.
For more information on how to take maraviroc, see the FDA drug label from DailyMed. (DailyMed is a federal website that includes the most recent drug labels submitted to FDA.)
If you forget to take maraviroc, take the next dose of maraviroc as soon as you remember it and then take your next scheduled dose at its regular time. If it is less than 6 hours before your next dose, do not take the missed dose. Wait and take the next dose at the regular time. Do not take two doses at the same time to make up for a missed dose.
Maraviroc can cause serious, life-threatening side effects. These include liver problems, skin reactions, and allergic reaction. An allergic reaction may happen before liver problems occur. (See the WARNING above.)
Other possible serious side effects of maraviroc include:
More information about maraviroc is available:
Last Reviewed: May 15, 2014
Last Updated: May 15, 2014