Hydroxyurea Side Effects
What should I watch for?
This drug may make you feel generally unwell. This is not uncommon, as chemotherapy can affect healthy cells as well as cancer cells. Report any side effects. Continue your course of treatment even though you feel ill unless your doctor tells you to stop. You will receive regular blood tests during your treatment.
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.
Talk to your doctor about your risk of cancer. You may be more at risk for certain types of cancers if you take this medicine.
Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
Do not become pregnant while taking this medicine or for at least 6 months after stopping it. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. Men should not father a child while taking this medicine and for at least a year after stopping it. 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.
This may interfere with the ability to have or father a child. You should talk with your doctor or health care professional if you are concerned about your fertility.
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:
Black, tarry stools
blackening of the fingernails and toenails
blood in the urine or stools
pinpoint red spots on the skin
sores in the mouth and on the lips
unusual bleeding or bruising
seeing, hearing, or feeling things that are not there
swelling of the feet or lower legs
Incidence not known
Bleeding under the skin
blisters on the skin
bluish or pale color on the skin of the fingers or toes
coldness of the fingers or toes
crater-like lesions on the skin
joint pain, stiffness, or swelling
numbness or tingling of the fingers or toes
pain in the fingers or toes
swelling of the eyelids, face, lips, hands, or feet
tightness in the chest
troubled breathing or swallowing
unusual tiredness or weakness
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:
Incidence not known
Bluish-brownish bands on the nails
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.