The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Feeling irritated (up to 66%) - Children age 12 to 15 months old only
- Drowsiness (up to 47%)
- Losing appetite (up to 45%)
- Injection site pain (up to 40%)
- Fever (up to 35%)
- Redness (12-25%)
Less Common Side Effects
- Fever
- Swelling of the glands in neck and cheek
- Stiff joints
- Swelling
- Measles/rubella-like rash (red spots all over the body)
MMR serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Serious allergic reactions: Hives, rash, shaking, itching, nausea, flushing, dizziness, shortness of breath, chest pain
- Febrile seizure (fever with seizures): Eye rolling, stiff arms and legs, loss of consciousness, shaking of arms and legs
- Meningeal irritation (irritation of the brain tissue): Neck stiffness, sensitive to bright light, headache
Source: DailyMed
The following MMR side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
- Feeling faint or lightheaded
- Seizures
- Unusual bruising or bleeding
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
- Fever
- General discomfort and fatigue
- Headache
- Irritability
- Muscle pain
- Pain, redness, or irritation at injection site
- Skin rash
