Hydroxyurea
About Hydroxyurea
Hydroxyurea is an oral prescription medication used to reduce the frequency of painful crises and the need for blood transfusions in people with sickle cell anaemia. It is also prescribed to treat certain types of blood cancers, such as chronic myeloid leukaemia, and other blood disorders like polycythaemia vera. This medication works by helping the body produce healthier red blood cells or by slowing down the growth of abnormal cells.
To get the best results, you must take Hydroxyurea consistently at the same time every day as directed by your doctor. You can take this medicine with or without food, but taking it with a full glass of water is generally recommended. Along with taking this medication, staying well-hydrated by drinking plenty of fluids is a crucial lifestyle step that supports your body during treatment.
While taking Hydroxyurea, you may experience mild side effects like nausea, mild stomach upset, or temporary hair thinning. However, you must contact your doctor immediately if you notice signs of serious issues, such as unusual bruising, fever, sore throat, or sores on your legs.
Do not take this if you are pregnant, planning to become pregnant, or breastfeeding, as this medication can cause severe harm to an unborn baby. Before starting, talk to your doctor if you have a history of kidney disease, liver damage, or a weakened immune system.
This medicine can interact with certain vaccines, gout medications, and antiviral drugs, which may increase the risk of severe side effects or reduce how well your treatments work. Elderly individuals and those with reduced kidney function should consult their doctor closely, as they may require special monitoring while taking Hydroxyurea.
Uses of Hydroxyurea
Medicinal Benefits
Hydroxyurea helps manage certain blood disorders by improving blood cell function and reducing disease-related complications. By supporting healthier blood cell levels and circulation, it helps improve quality of life and long-term health outcomes.
- Helps Reduce Painful Sickle Cell Crises: For individuals with sickle cell disease, Hydroxyurea helps reduce the frequency and severity of painful vaso-occlusive episodes, supporting greater comfort and reducing the need for hospitalisation.
- Supports Healthy Blood Cell Function: By improving blood cell production and reducing complications associated with blood disorders, Hydroxyurea helps lessen symptoms such as fatigue and weakness related to anaemia, supporting better daily functioning.
- Helps Protect Against Long-Term Complications: Regular use of Hydroxyurea helps reduce the risk of complications caused by abnormal blood cells or impaired blood flow, supporting the health of vital organs and improving long-term disease management.
Directions for Use
- Take Hydroxyurea with or without food as advised by your doctor.
- Hydroxyurea is generally taken once a day or as directed by the doctor.
- Swallow Hydroxyurea as a whole with a glass of water.
- Do not chew, crush, or break it.
Storage
Side Effects of Hydroxyurea
Common Side Effects (Usually mild):
- Nausea or mild stomach upset
- Temporary hair thinning or hair loss
- Mild skin changes, such as darkening or mild peeling
- Loss of appetite
Serious Side Effects (Call a doctor right away):
- Signs of infection, such as a high fever, chills, or persistent sore throat
- Unusual bleeding, easy bruising, or dark, tarry stools
- Severe shortness of breath or a sudden cough
- Painful, open sores or ulcers on your legs or feet
- Allergic reactions like swelling of the face, lips, or tongue, or a severe skin rash
Medicines Containing this Salt
View AllDrug Warnings
- Wear gloves when handling: Caregivers handling the capsules should wear disposable gloves to prevent direct skin contact with the medication.
- Keep up with blood tests: You will need regular blood tests while taking this medication so your doctor can monitor your blood cell counts and ensure your kidneys and liver are functioning safely.
- Use reliable birth control: Both men and women must use highly effective, reliable birth control during treatment and for several months after stopping the medication to prevent pregnancy.
- Monitor for skin ulcers: Inspect your skin, especially your legs and ankles, regularly for any red spots, sores, or painful ulcers, and report them to your doctor immediately.
- Avoid touching broken capsules: If a capsule accidentally breaks or spills, clean the area with a damp paper towel immediately, place it in a sealed bag, and throw it away, making sure not to inhale the powder.
Drug Interactions
- Certain antiretroviral medicines (e.g., didanosine, stavudine): Taking Hydroxyurea with certain medicines used to treat HIV may increase the risk of serious side effects, including liver damage and pancreatitis. Your doctor may recommend alternative treatment or closer monitoring if these medicines are used together.
- Medicines that suppress the immune system or bone marrow: Combining Hydroxyurea with other medicines that reduce bone marrow function may increase the risk of low white blood cell, red blood cell, or platelet counts. Regular blood tests may be needed during treatment.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
consult your doctorThe drinking of alcohol (in small amounts) does not appear to affect the safety or usefulness of Hydroxyurea. Taking alcohol in larger amounts causes dizziness.
Pregnancy
unsafeHydroxyurea is not safe during pregnancy because it may cause harmful effects to the baby.
Breast Feeding
consult your doctorIt is unknown whether Hydroxyurea is excreted in human milk. Please consult a doctor before using Hydroxyurea while breastfeeding.
Driving
cautionHydroxyurea may cause dizziness or a severe headache. Therefore, drive only if you are alert after taking Hydroxyurea.
Liver
consult your doctorIf you have any concerns regarding the use of Hydroxyurea in patients with liver problems, please consult a doctor.
Kidney
consult your doctorIf you have any concerns regarding the use of Hydroxyurea in patients with kidney problems, please consult a doctor.
Children
unsafeThe safety and efficacy of Hydroxyurea have not been established in children. Therefore, it is not recommended for children.
Habit Forming
Diet & Lifestyle Advise
- Stay well-hydrated: Drink plenty of water throughout the day. Staying hydrated is particularly crucial for sickle cell patients to help prevent blood flow blockages.
- Protect your skin: This medication can make your skin more sensitive to the sun and increase the risk of skin damage. Wear protective clothing and apply a broad-spectrum sunscreen daily when outdoors.
- Practice strict hand hygiene: Because this medicine can lower your white blood cell count and weaken your immune system, wash your hands frequently and avoid close contact with individuals who are sick.
- Avoid live vaccines: Talk to your healthcare provider before receiving any immunisations, as live vaccines should be avoided during treatment.
Special Advise
- Wash your hands before and after handling the bottle containing Hydroxyurea.
- A crushed or broken pill can be unsafe if it gets in your mouth, nose, eyes, or on your skin. If this happens, wash your skin with water and soap or wash your eyes with water.
Patients Concern
Disease/Condition Glossary
Head and neck cancer: It is a disease including abnormal growth of the tissues of the neck and head that may also have the ability to attack or spread to other portions of the body. Cancer of the head and neck generally starts in the cells known as squamous cells which appear in the lining of the surface of moist mucosa in the head and neck (e.g., inside of the throat, nose, and mouth).
Sickle cell anemia: It is a disease in which your body results in abnormally shaped red blood cells. The cells are shaped like a curved or sickle. They do not last as long as round, normal, red blood cells. This causes anemia. The sickle cells also get pushed into blood vessels, blocking the flow of blood. This can result in pain and organ damage.
FAQs
Hydroxyurea is used to treat head and neck cancer and sickle cell anaemia (blocking the flow of blood that causes pain and organ damage).
Take the Hydroxyurea as soon as you can, but avoid the missed dose if it is nearly time for your next dose. Do not take two doses at one time. Get your prescription refilled before you run out of Hydroxyurea entirely.
Immediately go to the emergency department of your nearest hospital. Be ready to tell or show what was taken, how much, and when it happened.
Hydroxyurea may cause a risk of skin cancer. Avoid contact with sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outside. Do not handle Hydroxyurea without the protection of skin.
Hydroxyurea can cause dizziness and drowsiness during the first limited hours after you take it. These side effects are more expected to happen when you start taking Hydroxyurea or when your doctor increases your dose.
Do not stop taking Hydroxyurea without discussing it with your doctor. Your doctor will most likely tell you to take another medicine, folic acid (a vitamin), to reduce some of the side effects of this Hydroxyurea. Take this Hydroxyurea exactly as instructed.
Hydroxyurea is a medication that requires careful monitoring and dosing based on your individual medical condition, weight, and other factors. Please consult your healthcare provider if you have any questions about your hydroxyurea dosage. They can provide personal guidance and ensure you're taking the correct amount.
Hydroxyurea can cause diarrhoea as a side effect. If you have watery or bloody diarrhoea, call your doctor. Do not use anti-diarrhea medicine unless your paediatrician tells you to.
Yes, it is recommended that you avoid certain foods and drinks while taking Hydroxyurea. Some substances can interact with the medication, potentially affecting its effectiveness or increasing the risk of side effects. Here are some things to avoid: alcohol, grapefruit, grapefruit juice, Foods high in tyramine (aged cheeses, cured meats, fermented foods, and certain types of beans), and excessive caffeine.
If you're feeling tired and weak while taking hydroxyurea, try these tips: rest when needed, eat healthy foods, drink plenty of water, and get enough sleep. Gentle exercise can also help. Discuss with your healthcare provider if you're experiencing severe fatigue or weakness that interferes with your daily activities. They may be able to adjust your treatment or recommend additional strategies.
Hydroxyurea is not safe during pregnancy because it may cause harmful effects to the baby.
Hydroxyurea can make your hair thin or fall out. This is a common side effect, but how much hair you lose can change from person to person. Sometimes, hair loss is temporary, but in rare cases, it can be permanent. If you're worried about hair loss, talk to your doctor. They can help you manage it.
If you notice any changes in your skin while taking Hydroxyurea, talk to your doctor. It's common to have darker skin or a rash. To protect your skin, use sunscreen, moisturize, and avoid things that might irritate it. If your skin problems are severe, see a dermatologist.
If you are having trouble with constipation while taking Hydroxyurea, try these tips: eat more fibre, drink plenty of water, exercise regularly, and consider using over-the-counter laxatives after talking to your doctor. Avoid food that can worsen constipation, and try to go to the bathroom at the same time each day. If your constipation is severe, talk to your doctor.
To reduce the risk of infection while taking Hydroxyurea, wash your hands often, avoid sick people, keep your home clean, get vaccinated, watch for signs of infection, and follow your doctor's instructions.
Common side effects of Hydroxyurea may include loss of appetite (feeling unwell and stomach upset), increased bleeding tendency, nausea, upset stomach, and vomiting. Most of these side effects of Hydroxyurea do not require medical attention and gradually resolve over time. However, if the side effects persist, contact your doctor.
No, you should not open, break, or chew Hydroxyurea capsules. The powder inside can be harmful if it touches your skin or is inhaled. If you have trouble swallowing capsules, talk to your doctor or pharmacist for safe alternative options.
No, Hydroxyurea can cause severe birth defects. Both men and women should use effective contraception while taking this medicine and for a specific period after stopping. If you are planning a family, talk to your doctor to discuss safer alternatives.
You should avoid receiving live vaccines (such as the yellow fever or MMR vaccine) while taking Hydroxyurea, as your weakened immune system may not react safely. Always check with your doctor or pharmacist before getting any vaccine.
Mild skin darkening or nail changes are common side effects of Hydroxyurea. However, you should still mention any skin changes to your doctor to rule out other issues, especially if you notice painful sores or ulcers.
Yes, regular blood tests are absolutely essential. Your doctor needs to monitor your red blood cells, white blood cells, and platelets to make sure your dose is safe. Talk to your doctor to set up your blood test schedule.
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