Get emergency medical help if you have signs of an allergic reaction to Mavenclad: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Mavenclad may cause a serious brain infection that can lead to disability or death. Call your doctor right away if you have problems with speech, thought, vision, or muscle movement. These symptoms may start gradually and get worse quickly.
Also call your doctor at once if you have:
heart problems - swelling, rapid weight gain, feeling short of breath;
low blood cell counts - fever, swollen glands, stomach pain, cough, runny nose, joint pain, mouth sores, skin sores or rash, easy bruising, unusual bleeding;
signs of hepatitis - right-sided upper stomach pain, vomiting, loss of appetite, yellowing of your skin or eyes, and not feeling well;
signs of shingles - flu-like symptoms, tingly or painful blistering rash on one side of your body; or
signs of tuberculosis: fever, cough, night sweats, loss of appetite, weight loss, and feeling very tired.
Common Mavenclad side effects may include:
headache;
low white blood cell counts; or
cold symptoms such as stuffy nose, sneezing, sore throat.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Mavenclad side effects (more detail)
