What should I watch for?
Your condition will be monitored carefully while you are receiving this medicine. You may need blood work done while you are taking this medicine.
This medicine can cause serious allergic reactions. To reduce your risk you may need to take medicine before treatment with this medicine. Take your medicine as directed.
In some patients, this medicine may cause a serious brain infection that may cause death. If you have any problems seeing, thinking, speaking, walking, or standing, tell your doctor right away. If you cannot reach your doctor, urgently seek other source of medical care.
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.
Do not become pregnant while taking this medicine or for 12 months after stopping it. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information. Do not breast-feed an infant while taking this medicine or for 6 months after stopping it.
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
blood in the urine or stools
body aches or pain
difficulty with breathing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
flushed, dry skin
fruit-like breath odor
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals
lower back or side pain
pain or tenderness around the eyes and cheekbones
painful or difficult urination
pinpoint red spots on the skin
pounding in the ears
slow or fast heartbeat
sores, ulcers, or white spots in the mouth or on the lips
stuffy or runny nose
swelling of the tongue or throat
tightness of the chest
tingling of the hands or feet
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
unusual weight gain or loss
Blistering, peeling, or loosening of the skin
blisters in the mouth
blisters on the trunk, scalp, or other areas
burning, crawling, itching, numbness, prickling, “pins and needles”, or tingling feeling
decreased frequency and amount of urine
difficulty with moving
feeling sad or empty
joint or muscle pain
loss of appetite
loss of interest or pleasure
muscle pain or stiffness
numbness or tingling in the hands, feet, or lips
pain or redness at the injection site
pain, swelling, or redness in the joints
red skin lesions, often with a purple center
red, itchy lining of the eye
redness of the face, neck, arms, and occasionally, upper chest
Incidence not known
Blue-yellow color blindness
blurred vision or other change in vision
burning or stinging of the skin
dilated neck veins
extreme tiredness or weakness
eye pain, tearing
feeling of discomfort, illness, or weakness
painful cold sores or blisters on the lips, nose, eyes, or genitals
sensitivity of the eye to light
severe abdominal or stomach pain
severe vomiting, sometimes with blood
sores, welts, or blisters
swelling, stiffness, redness, or warmth around many joints
swollen lymph glands
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:
lack or loss of strength
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.