What should I watch for?
Visit your healthcare professional for regular checks on your progress. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse. You may need blood work done while you are taking this medicine.
This medicine may stay in your body for up to 2 years after your last dose. Tell your doctor about any unusual side effects or symptoms. A medicine can be given to help lower your blood levels of teriflunomide quickly.
Women must use effective birth control with this medicine. There is a potential for serious side effects to an unborn child. Do not become pregnant while taking this medicine or for 2 years after stopping it. Inform your doctor if you wish to become pregnant. This medicine remains in your blood after you stop taking it. You must continue using effective birth control until the blood levels have been checked and they are low enough. Immediately talk to your doctor if you think you may be pregnant. You may need a pregnancy test. A medicine can be given to help lower your blood levels of this medicine more quickly. Talk to your health care professional or pharmacist for more information.
For men, your partner should not become pregnant while you are taking this medicine. There is a potential for serious side effects to an unborn child. You and your female partner should use effective birth control during your treatment. This medicine is found in the semen of men. This medicine remains in your blood after you stop taking it. Men who wish to father a child should continue using effective birth control until the blood levels of this medicine have been checked and they are low enough.
You should not receive certain vaccines during your treatment and for 6 months after your treatment with this medication ends.
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 immediately if any of the following side effects occur:
Body aches or pain
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
cough producing mucus
general feeling of discomfort or illness
loss of appetite
loss of voice
muscle aches and pains
tightness in the chest
unusual tiredness or weakness
Abdominal or stomach pain or tenderness
black, tarry stools
bloody or cloudy urine
burning, numbness, pain, or tingling in all fingers except smallest finger
clay colored stools
decreased urine output
difficult, burning, or painful urination
fast, irregular, pounding, or racing heartbeat or pulse
frequent urge to urinate
itching or skin rash
loss of appetite
lower back or side pain
pounding in the ears
rapid weight gain
slow or fast heartbeat
swelling of the feet or lower legs
ulcers, sores, or white spots in the mouth
unusual bleeding or bruising
weakness or heaviness of the legs
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:
Hair loss or thinning of the hair
Blemishes on the skin
burning, dry, or itching eyes
difficulty with moving
discharge or excessive tearing
full or bloated feeling
muscle cramping or stiffness
pain in the lower back, bottom, or hips
pain in the upper leg
pressure in the stomach
redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
swelling of the abdominal or stomach area
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.