fludarabine phosphate at a glance
Medicine class
Purine analogue antineoplastic treatment.
Licensed use
B-cell chronic lymphocytic leukaemia in adults with sufficient bone-marrow reserve.
Taking the tablets
Swallow whole with water; do not break or chew. Take with or without food.
Blood transfusions
Tell healthcare teams about previous fludarabine treatment because irradiated blood components are required.
What is fludarabine phosphate used for?
The selected oral product has a specific UK-licensed indication. Other specialist uses may involve different formulations or protocols.
Licensed for B-cell chronic lymphocytic leukaemia in adults with sufficient bone-marrow reserve; initial treatment is restricted to advanced, symptomatic or progressive disease.
Fludarabine is also used in specialist lymphodepleting protocols before some immune effector-cell therapies, including CAR-T treatment.
How does fludarabine phosphate work?
After entering cells, fludarabine is converted to an active nucleotide. This disrupts enzymes needed to make and repair DNA and also affects RNA and protein production, limiting cell division and promoting death of susceptible lymphocytes.
fludarabine phosphate preparations and strengths
Tablet
Route: Oral
Strengths: 10 mg
How to take fludarabine phosphate
Take only as directed by the specialist cancer team. Swallow the tablets whole with water without breaking or chewing; they may be taken with or without food. Do not stop treatment without discussing it with the team.
Handle the tablets carefully because they are cytotoxic.
Keep them in their original child-resistant container.
Return unused tablets to the hospital or pharmacy for safe disposal.
fludarabine phosphate side effects
Common or expected effects
- Reduced white cells, red cells or platelets
- Infections, including pneumonia and opportunistic infections
- Cough and fever
- Nausea, vomiting or diarrhoea
- Tiredness or weakness
- Mouth inflammation, rash or reduced appetite
- Peripheral numbness or weakness
Get urgent medical advice
- Serious infection symptoms such as fever, cough, breathlessness or chest pain
- Unexpected bruising, bleeding or repeated infections
- Red-brown urine, jaundice or marked weakness
- Flank pain, blood in the urine or reduced urine
- Blistering or peeling skin or mouth lesions
- New confusion, seizure, visual loss or limb weakness
- Palpitations or chest pain
fludarabine phosphate in pregnancy
Fludarabine is genotoxic and may harm an unborn baby. It should not be used during pregnancy unless a specialist judges that the potential maternal benefit outweighs the fetal risk. Effective contraception is required during treatment and for at least six months afterwards for females and at least three months afterwards for males. Seek prompt specialist advice about an occurring or planned pregnancy.
fludarabine phosphate while breastfeeding
Breastfeeding is contraindicated during treatment because serious adverse effects in a breastfed infant are possible.
fludarabine phosphate interactions
The cancer team should review prescribed, non-prescribed and complementary products before treatment.
Pentostatin
Combination is not recommended because fatal lung toxicity has occurred.
Dipyridamole and other adenosine-uptake inhibitors
These may reduce fludarabine's therapeutic effect.
Cytarabine
Fludarabine can increase intracellular exposure to cytarabine's active metabolite, requiring specialist oversight.
Live vaccines
Avoid during and after treatment; agree timing with the specialist team.
Common questions about fludarabine phosphate
Answers are fully visible for fast scanning and source review.
Is fludarabine phosphate chemotherapy?
Yes. It is a cytotoxic purine analogue that interferes with the growth and survival of susceptible cancerous lymphocytes.
Why are blood tests needed?
Fludarabine can suppress bone marrow, reducing white cells, red cells and platelets. Tests help detect infection risk, anaemia, bleeding risk and prolonged toxicity.
Can the tablets be taken with food?
Yes. Take them with or without food and swallow them whole with water.
Can I have vaccines during treatment?
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.