What side effects may I notice from receiving Gilenya?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-breathing problems
-changes in vision
-confusion
-headache with fever, neck stiffness, sensitivity to light, nausea, or confusion
-loss of memory
-problems with balance, talking, or walking
-signs and symptoms of a dangerous change in heartbeat or heart rhythm like chest pain; dizziness; fast or irregular heartbeat; palpitations; feeling faint or lightheaded, falls; breathing problems
-signs and symptoms of infection like fever or chills; cough; sore throat; pain or trouble passing urine
-signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin
-change in your skin''s appearance (color, change in a mole or freckle, new growth)
-seizures
-sudden numbness or weakness of the face, arm or leg
-unusually slow heartbeat

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-back pain
-diarrhea
-headache
-pain in legs or arms
-sinus trouble

This list may not describe all possible side effects for Gilenya. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.