How does hydroxyurea help sickle cell disease?

Hydroxyurea reduces how often and how severely sickle cell crises happen. It works mainly by increasing the amount of fetal haemoglobin (HbF) your body makes — a type of haemoglobin that does not sickle — so your red blood cells stay flexible and are less likely to block small blood vessels. Over months of daily use, this leads to fewer painful crises, fewer episodes of acute chest syndrome, less need for blood transfusions, and often a much better quality of life. It is the main disease-modifying treatment for sickle cell disease, which is why it matters so much in Nigeria.

Is hydroxyurea safe for my child with sickle cell?

Yes — hydroxyurea is used in children with sickle cell disease and is very effective, and international and Nigerian guidance supports its use even from a young age when a specialist prescribes and monitors it. The keys to safety are a correctly set, weight-based dose and regular blood tests to watch the blood count, both managed by a doctor. Many parents worry because hydroxyurea is also used in some cancers, but at sickle cell doses and with proper monitoring, its benefits in preventing crises and complications are well established. Discuss it with your child's haematologist.

How much does hydroxyurea cost in Nigeria?

Hydroxyurea is relatively affordable compared with many long-term medicines — a pack commonly costs in the region of a few thousand naira up to around ₦12,000, depending on the brand (Hydrea, Siklos, or generic), strength, and pharmacy. Because it is taken every day, long-term, cost still adds up, so a NAFDAC-registered generic can help, and some sickle cell programmes and clinics support access. Never ration or skip doses to save money without telling your doctor, as consistent use is what protects you from crises.

Do I still need folic acid and pain medicine if I take hydroxyurea?

Yes. Hydroxyurea reduces how often crises happen, but it is not a cure and does not replace the rest of sickle cell care. You should continue folic acid (to support red-cell production), stay well hydrated, keep up with vaccinations and any prescribed penicillin prophylaxis in children, and still have pain relief ready for crises. Hydroxyurea works alongside these measures. Keep attending your sickle cell clinic so your treatment and monitoring stay on track.

Hydroxyurea Price in Nigeria (July 2026): ₦3,000–₦12,000

Key Facts

Drug Class: Antineoplastic / disease-modifying agent
Prescription: Required
NAFDAC Status: NAFDAC Registered
Forms: Capsule, Tablet
Online price: ~₦3,340see prices
WHO Essential: Yes

What is Hydroxyurea?

Hydroxyurea (also called hydroxycarbamide) is the single most important medicine for sickle cell disease — and that matters enormously in Nigeria, which has the largest sickle cell population in the world, with tens of thousands of affected babies born every year. It is a daily capsule or tablet that changes the course of the disease, reducing the frequency of painful crises, cutting the need for blood transfusions, and lowering the risk of serious complications. It is sold as Hydrea, Siklos, and generic hydroxyurea.

In sickle cell disease, an abnormal form of haemoglobin makes red blood cells stiffen into a sickle shape, block small blood vessels, and cause the sudden severe pain known as a crisis. Hydroxyurea works mainly by boosting the body's production of fetal haemoglobin (HbF) — a type of haemoglobin that resists sickling — so red cells stay flexible and rounded for longer. Over months, this leads to fewer crises, fewer chest and other complications, and often a better quality of life.

Hydroxyurea is a prescription medicine that must be supervised by a doctor, usually a haematologist, because the dose is adjusted to each person and regular blood tests are needed to watch the blood count. It is taken long-term, and its full benefit builds up over several months rather than days. It is safe and life-changing for most people with sickle cell when properly monitored, but it must not be used in pregnancy, and men and women should use contraception while on it. Buy it from a licensed pharmacy and verify the NAFDAC number.

What is Hydroxyurea used for?

In Nigeria, Hydroxyurea is commonly used for:

Reducing the number and severity of painful sickle cell crises
Reducing the frequency of acute chest syndrome and the need for blood transfusions
Long-term protection against sickle cell complications, improving quality of life
Certain blood cancers such as chronic myeloid leukaemia and essential thrombocythaemia (a separate, specialist use)

Dosage

IMPORTANT

Always follow your doctor's or pharmacist's instructions. The information below is for general reference only.

Adults

For sickle cell disease, hydroxyurea is started at a low dose based on body weight (often around 15mg/kg once daily) and gradually increased by a doctor to the best tolerated dose, guided by blood counts. It is taken once a day at the same time. The full benefit builds over 3-6 months, so it must be taken consistently even before improvement is felt. Regular blood tests are essential to guide the dose.

Children

Hydroxyurea is used in children with sickle cell disease and is highly effective, but the dose is carefully weight-based and set by a specialist, with close blood-count monitoring. Siklos comes in a form that makes paediatric dosing easier.

Elderly

Used with the same monitoring; dose adjusted for kidney function.

Take it every day — skipping doses reduces its protective effect. Do not stop it because you feel well; the benefit depends on continuous use. Keep every appointment for blood tests, since the dose is set by your blood count. Handle the capsules with clean, dry hands and wash your hands afterwards. Continue folic acid and stay well hydrated, and keep using pain relief and other sickle cell care as advised.

Side Effects

Common side effects

•A drop in blood counts (white cells, platelets, or haemoglobin) — the main reason for regular monitoring; usually managed by adjusting the dose
•Nausea or mild stomach upset
•Darkening of the skin or nails
•Mild hair thinning
•Headache or dizziness

Serious side effects — seek medical help immediately

A very low white-cell count, raising infection risk: fever, sore throat, or feeling very unwell — seek care urgently
A very low platelet count: unusual bruising or bleeding
Leg ulcers that are slow to heal
Signs of a serious allergic or skin reaction
Severe or persistent symptoms during any infection

When to see a doctor

Seek care urgently for a fever or signs of infection while on hydroxyurea, as a low white-cell count can make infections dangerous, and for unusual bruising or bleeding. Do not miss your scheduled blood tests. Contact your doctor about slow-healing leg ulcers, and always seek prompt help for a sickle cell crisis, chest pain, or breathlessness as you normally would.

Warnings & Precautions

Do not take Hydroxyurea if you have:

Do not use in pregnancy — hydroxyurea can harm the developing baby; effective contraception is essential for both women and men while taking it and for a period afterwards
Do not use while breastfeeding
Do not use if blood counts are already very low, until corrected and under specialist care
Use with caution and dose adjustment in kidney or liver impairment
Do not use without regular blood-count monitoring

Drug interactions

•Other medicines that lower blood counts (including some antiretrovirals and chemotherapy) increase the risk of low counts
•Certain HIV medicines (e.g. didanosine, stavudine) combined with hydroxyurea raise the risk of serious side effects
•Live vaccines should be discussed with your doctor
•Tell your doctor about all medicines, as hydroxyurea affects the bone marrow

Pregnancy & Breastfeeding

Hydroxyurea must not be used in pregnancy, as it can cause harm to the baby, and it should not be used while breastfeeding. Both women and men of reproductive age should use reliable contraception during treatment and for a time after stopping, as advised by the doctor. If pregnancy is planned or occurs, the treatment plan must be reviewed with a haematologist promptly rather than simply stopped, given the risks of uncontrolled sickle cell disease in pregnancy.

Brands of Hydroxyurea in Nigeria

The NAFDAC registry holds 9 Hydroxyurea products from 6 manufacturers, including combination products and older listings whose status you can check in the full list. Below are some of the most common brands — see the full, searchable list for all of them.

Brand Name	Manufacturer	Strength	Form
Hydrea	Bristol Myers Squibb	500mg	Capsule
Siklos	Addmedica	100mg, 1000mg	Tablet
Hydroxyurea	Various generic manufacturers	500mg	Capsule

See all 9 registered Hydroxyurea brands

How to Verify Your Hydroxyurea is Genuine

1Get hydroxyurea on prescription from a licensed pharmacy, ideally through a sickle cell clinic or haematologist
2Check the NAFDAC registration number on the pack and verify it on the NAFDAC Green Book or app
3Check the expiry date and that the packaging is sealed and untampered
4Genuine capsules/tablets should be uniform; discard any that look irregular or discoloured
5For Hydrea (Bristol Myers Squibb) or Siklos (Addmedica), check the manufacturer branding and batch number; for generics, confirm the manufacturer
6Because it needs blood-test monitoring, use a consistent, trusted source and stay linked to a clinic rather than buying ad hoc from unverified sellers

Use our NAFDAC Checker tool

Hydroxyurea Price in Nigeria

As of July 2026, Hydroxyurea sells for about ₦3,340 online in Nigeria across HealthPlus. Open-market prices (e.g. Idumota, Ogbogwu) are often lower.

Online retail (sampled)

HealthPlus

₦3,340

From 1 listing across HealthPlus — brands and pack sizes vary · updated July 2026.

Price trend

We've tracked Hydroxyurea online prices since July 2026 — median ₦3,340 (range ₦3,340–₦3,340, from 1 listing). This updates monthly, and the month-on-month trend will appear here — see the Nigerian Medicine Price Index for prices across all tracked drugs.

Where to Buy

Purchase Hydroxyurea only from licensed pharmacies and verified distributors. Avoid buying medicines from unverified sources, roadside vendors, or unregistered market stalls.

Before you buy, verify the product's NAFDAC registration and check the current online prices above so you know a fair price before you pay.

Buying Hydroxyurea in bulk or for resale? Our guide on how to buy medicines in bulk in Nigeria safely covers verifying a supplier and spotting fakes before a large order.

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Related Resources for Hydroxyurea

Guides, articles, and tools related to Hydroxyurea and other sickle cell medicines in Nigeria.

Frequently Asked Questions

Sources

•NAFDAC Greenbook — the official database of all products registered with Nigeria's National Agency for Food and Drug Administration and Control. Brand-level NAFDAC numbers for Hydroxyurea on this page were cross-referenced against the Greenbook.
•WHO Model List of Essential Medicines — Hydroxyurea is included in the WHO's list of essential medicines, meaning it is considered essential for basic healthcare needs.
•British National Formulary (BNF) dosing and interaction guidance for Hydroxyurea.
•Nigerian Standard Treatment Guidelines (Federal Ministry of Health).

Last updated: 22 July 2026

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