Side Effects of Actemra

Actemra can cause serious side effects. See "Drug Precautions" for some serious side effects of Actemra.

Actemra may cause Hepatitis B infection in people who carry the virus in their blood.  Your doctor may do blood tests before you start, and during treatment with Actemra. Tell your doctor if you have any of the following symptoms of a possible hepatitis B infection:
  • feel very tired
  • chills
  • skin or eyes look yellow
  • stomach discomfort
  • little or no appetite
  • muscle aches
  • vomiting
  • dark urine
  • clay-colored bowel movements
  • skin rash 
  • fevers
Your doctor may do blood tests before you start, and during Actemra treatment. 

Serious allergic reactions, including death, can happen with Actemra. Tell your doctor right away if you have any of the following signs of a serious allergic reaction: 

  • shortness of breath or trouble breathing 
  • skin rash
  • swellng of the lips, tongue, or face 
  • chest pain
  • feeling dizzy or faint

Multiple Sclerosis (an autoimmune disease that affects the brain and spinal chord) has been diagnosed rarely in people who take Actemra. It is not known what effect Actemra may have on some nervous system disorders. Common side effects of Actemra include:

  • upper respiratory tract infections (common cold, sinus infections)
  • increased blood pressure (hypertension)
  • headache 
Tell your doctor if you have any side effect that bothers you or that does not go away. These are not all of the possible side effects of Actemra. For more information, ask your doctor or pharmacist.