What should I watch for?
This medicine can cause serious allergic reactions such as changes in your breathing, fever, chills, dizziness or lightheadedness. These effects are more common with the first dose. To reduce your risk you may need to take medicine before treatment with this medicine. Take your medicine as directed.
Visit your prescriber or health care professional for checks on your progress. You will need to have regular blood work. Report any other side effects. The side effects of this medicine can continue after you finish your treatment. Continue your course of treatment even though you feel ill unless your doctor tells you to stop.
Call your doctor or health care professional for advice if you get a fever, chills or sore throat, or other symptoms of a cold or flu. Do not treat yourself. This drug decreases your body's ability to fight infections. Try to avoid being around people who are sick.
This medicine may increase your risk to bruise or bleed. Call your doctor or health care professional if you notice any unusual bleeding.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur:
Black, tarry stools
bloating or swelling of the face, arms, hands, lower legs, or feet
body aches or pain
cough or hoarseness
cough producing mucus
difficult or labored breathing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
feeling of warmth
loss of voice
lower back or side pain
nausea or vomiting
painful blisters on the trunk of the body
painful or difficult urination
rapid weight gain
rapid, shallow breathing
redness of the face, neck, arms, and occasionally, upper chest
tightness in the chest
tingling of the hands or feet
troubled breathing with exertion
ulcers, sores, or white spots in the mouth
unusual bleeding or bruising
unusual tiredness or weakness
unusual weight gain or loss
Fast, pounding, or irregular heartbeat or pulse
pounding in the ears
Incidence not known
Blistering, peeling, or loosening of the skin
fluid-filled skin blisters
joint or muscle pain
no blood pressure or pulse
red skin lesions, often with a purple center
red, irritated eyes
sensitivity to the sun
stopping of heart
yellow eyes or skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
redness of the skin
Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
pain or tenderness around the eyes and cheekbones
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.