See also Warning section.
Before taking hydroxyurea, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, blood/bone marrow disorders (such as bone marrow suppression, neutropenia, thrombocytopenia, anemia), HIV infection, high uric acid level in the blood, radiation treatment.
Hydroxyurea can make you more likely to get infections or may worsen any current infections. Avoid contact with people who have infections that may spread to others (such as chickenpox, measles, flu). Consult your doctor if you have been exposed to an infection or for more details.
Do not have immunizations/vaccinations without the consent of your doctor. Avoid contact with people who have recently received live vaccines (such as flu vaccine inhaled through the nose).
To lower the chance of getting cut, bruised, or injured, use caution with sharp objects like razors and nail cutters, and avoid activities such as contact sports.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Older adults may be more sensitive to the side effects of this drug.
It is unknown if this medication affects the sperm. If you plan to father a child, discuss the risks and benefits of this medication with your doctor.
Hydroxyurea is not recommended for use during pregnancy. It may harm an unborn baby. To avoid pregnancy, both men and women taking this drug should use reliable form(s) of birth control (such as birth control pills, condoms) during treatment, and for 30 days after treatment for women, and for 1 year after treatment for men. Consult with your doctor for more details. If you or your partner becomes pregnant or may be pregnant, tell your doctor right away.
Hydroxyurea passes into breast milk and may have undesirable effects on a nursing infant. Breast-feeding while using this drug is not recommended. Consult your doctor before breast-feeding.