GILENYA Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

  • trouble breathing
  • diarrhea
  • abnormal liver function tests
  • a high alanine transaminase level
  • a high aspartate transaminase level

If experienced, these tend to have a Less Severe expression i

  • depression
  • inflammation of the tissue lining the sinuses
  • backache
  • pain in the arms or legs
  • headache
  • cough
  • intense abdominal pain

INFREQUENT side effects

If experienced, these tend to have a Severe expression i

  • an infection due to a fungus
  • an infection
  • high amount of triglyceride in the blood
  • low levels of white blood cells
  • a migraine headache
  • high blood pressure
  • slow heartbeat
  • low blood pressure
  • pneumonia
  • high amount of bilirubin in the blood
  • a decrease in lung function measurement

If experienced, these tend to have a Less Severe expression i

  • a fungal infection of the skin called tinea versicolor
  • a decreased number of lymphocytes in the blood
  • blurred vision
  • inflammation of the lining of the stomach and intestines
  • a type of skin condition with redness and itching called eczema
  • hair loss
  • dizziness
  • weight loss
  • generalized weakness
  • a small, soft skin growth called cutaneous papilloma

RARE side effects

If experienced, these tend to have a Severe expression i

  • shingles
  • herpes simplex encephalitis
  • a herpes simplex infection
  • infection with Cryptococcus fungus
  • opportunistic fungal infection
  • malignant melanoma, a type of skin cancer
  • Kaposi's sarcoma
  • a type of lymphoma involving the skin called mycosis fungoides
  • cutaneous T-cell lymphoma
  • decreased blood platelets
  • atrioventricular block, a type of slow heart rhythm disorder
  • prolonged QT interval on EKG
  • a stroke
  • acute liver failure
  • liver damage
  • fainting
  • seizures
  • heart throbbing or pounding
  • chest pain
  • a type of allergic reaction called angioedema
  • inflammation of the liver with stoppage of bile flow
  • basal cell carcinoma of the skin
  • malignant lymphoma
  • macular edema
  • progressive multifocal leukoencephalopathy, a type of brain infection
  • a type of brain disorder called posterior reversible encephalopathy syndrome
  • prolonged P-R interval observed on EKG
  • meningitis due to varicella zoster virus
  • a type of skin cancer called Merkel cell carcinoma
  • an increased risk of developing an uncommon viral infection called an opportunistic infection
  • cancer of the squamous cells in the skin
  • an infection by human papillomavirus

If experienced, these tend to have a Less Severe expression i

  • joint pain
  • muscle pain

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Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.