Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- fever, chills, body aches, flu symptoms, sores in your mouth and throat;
- easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin;
- pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating;
- skin redness, skin ulcers, or open sores;
- painful or difficult urination;
- confusion, hallucinations, seizure; or
- nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of your skin or eyes).
Less serious side effects may include:
- hair loss;
- skin peeling or discoloration, mild rash;
- upset stomach, constipation, diarrhea, vomiting;
- headache, dizziness, drowsiness; or
- weight gain.
This is not a complete list of side effects and others may occur.