Fludara oral 10 mg film-coated tablets

Each film-coated tablet contains 10mg fludarabine phosphate.

Excipients: Lactose monohydrate 74.75 mg

For the full list of excipients, see section 6.1

Film-coated tablets.

Salmon-pink, capsule-shaped tablet marked with 'LN' in a regular hexagon on one side.

Treatment of B-cell chronic lymphocytic leukaemia (CLL) in adult patients with sufficient bone marrow reserves.

First line treatment with Fludara oral should only be initiated in adult patients with advanced disease, Rai stages III/IV (Binet stage C) or Rai stages I/II (Binet stage A/B) where the patient has disease related symptoms or evidence of progressive disease.

Posology

The recommended dose is 40 mg fludarabine phosphate/m² body surface given daily for 5 consecutive days every 28 days by oral route. This dose corresponds to 1.6 times the recommended intravenous dose of fludarabine phosphate (25 mg/m2 body surface per day).

The following table provides guidance for determining the number of tablets of Fludara oral to be administered:

The duration of treatment depends on the success of treatment and the tolerability of the drug. Fludara oral should be administered until best response is achieved (complete or partial remission, usually 6 cycles) and then the drug should be discontinued.

Dose adjustments for the first treatment cycle (start of therapy with Fludara) are not recommended (except in patients with impairment of renal function, see 'Patients with renal impairment').

Patients undergoing treatment with Fludara should be closely monitored for response and toxicity.

Individual dosing should be carefully adjusted according to the observed haematological toxicity.

If at the start of a subsequent cycle cell numbers are too low to administer the recommended dosage and there is evidence of treatment associated myelosuppression, the planned treatment cycle should be postponed until granulocyte count is above 1.0 x 109/L and platelet count is above 100 x 109/L. Treatment should only be postponed up to a maximum of two weeks. If granulocyte and platelet counts have not recovered after two weeks of postponement, the dose should be reduced according to the suggested dose adjustments in the table below.

Dose should not be reduced if thrombocytopenia is disease related.

If a patient does not respond to treatment after two cycles and shows no or little haematological toxicity a careful dose adjustment towards higher fludarabine phosphate doses in subsequent treatment cycles could be considered.

Patients with renal impairment

Doses should be adjusted for patients with reduced kidney function. If creatinine clearance is between 30 and 70 ml/min, the dose should be reduced by up to 50 % and close haematological monitoring should be used to assess toxicity (see section 4.4).

Fludara oral treatment is contraindicated if creatinine clearance is < 30 ml/min (see section 4.3).

Patients with hepatic impairment

No data are available concerning the use of Fludara in patients with hepatic impairment. In this group of patients, Fludara should be used with caution.

Paediatric population

The safety and efficacy of Fludara oral in children below the age of 18 years have not been established. Therefore, Fludara is not recommended for use in children.

Older people

Since there are limited data for the use of Fludara in older people (> 75 years), caution should be exercised with the administration of Fludara in these patients.

In patients over the age of 65 years, creatinine clearance should be measured (see “Patients with renal impairment” and section 4.4).

Method of administration

Fludara oral should be prescribed by a qualified physician experienced in the use of antineoplastic therapy.

Fludara oral can be taken either on an empty stomach or together with food. The tablets have to be swallowed whole with water, they should not be chewed or broken.

Precautions to be taken before handling the medicinal product

For instructions on handling of the medicinal product, see section 6.6.

- Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.

- Renal impairment with creatinine clearance <30 ml/min.

- Decompensated haemolytic anaemia.

- Lactation.

Myelosuppression

Severe bone marrow suppression, notably anaemia, thrombocytopenia and neutropenia, has been reported in patients treated with Fludara. In a Phase I intravenous study in adult solid tumour patients, the median time to nadir counts was 13 days (range 3 – 25 days) for granulocytes and 16 days (range 2 - 32 days) for platelets. Most patients had haematologic impairment at baseline either as a result of disease or as a result of prior myelosuppressive therapy.

Cumulative myelosuppression may be seen. While chemotherapy-induced myelosuppression is often reversible, administration of fludarabine phosphate requires careful haematologic monitoring.

Fludarabine phosphate is a potent antineoplastic agent with potentially significant toxic side effects. Patients undergoing therapy should be closely observed for signs of haematologic and non-haematologic toxicity. Periodic assessment of peripheral blood counts is recommended to detect the development of anaemia, neutropenia and thrombocytopenia.

Several instances of trilineage bone marrow hypoplasia or aplasia resulting in pancytopenia, sometimes resulting in death, have been reported in adult patients. The duration of clinically significant cytopenia in the reported cases has ranged from approximately 2 months to approximately 1 year. These episodes have occurred both in previously treated or untreated patients.

As with other cytotoxics, caution should be exercised with fludarabine phosphate, when further haematopoietic stem cell sampling is considered.

Autoimmune disorders

Irrespective of any previous history of autoimmune processes or Coombs test status, life-threatening and sometimes fatal autoimmune phenomena (see section 4.8) have been reported to occur during or after treatment with Fludara. The majority of patients experiencing haemolytic anaemia developed a recurrence in the haemolytic process after rechallenge with Fludara.

Patients treated with Fludara oral should be closely monitored for signs of haemolysis.

Discontinuation of therapy with Fludara is recommended in case of haemolysis. Blood transfusion (irradiated, see below) and adrenocorticoid preparations are the most common treatment measures for autoimmune haemolytic anaemia.

Neurotoxicity

The effect of chronic administration of Fludara on the central nervous system is unknown. However, patients tolerated the recommended intravenous dose, in some studies for relatively long treatment times (for up to 26 courses of therapy).

Patients should be closely observed for signs of neurologic effects.

When used at high doses in dose-ranging studies in patients with acute leukaemia, intravenous Fludara was associated with severe neurological effects, including blindness, coma and death. Symptoms appeared from 21 to 60 days from last dose. This severe central nervous system toxicity occurred in 36 % of patients treated intravenously with doses approximately four times greater (96 mg/m²/day for 5 - 7 days) than the recommended dose. In patients treated at doses in the range of the dose recommended for CLL, severe central nervous system toxicity occurred rarely (coma, seizures and agitation) or uncommonly (confusion) (see section 4.8)

In post-marketing experience neurotoxicity has been reported to occur earlier or later than in clinical trials.

Administration of Fludara can be associated with leukoencephalopathy (LE), acute toxic leukoencephalopathy (ATL) or reversible posterior leukoencephalopathy syndrome (RPLS). These may occur:

• at the recommended dose

o when Fludara is given following, or in combination with, medications known to be associated with LE, ATL or RPLS,

o or when Fludara is given in patients with other risk factors such as cranial or total body irradiation, Hematopoietic Cell Transplantation, Graft versus Host Disease, renal impairment, or hepatic encephalopathy.

• at doses higher than the recommended dose

LE, ATL or RPLS symptoms may include headache, nausea and vomiting, seizures, visual disturbances such as vision loss, altered sensorium, and focal neurological deficits. Additional effects may include optic neuritis, and papillitis, confusion, somnolence, agitation, paraparesis/ quadriparesis, muscle spasticity and incontinence.

LE/ ATL/ RPLS may be irreversible, life-threatening, or fatal.

Whenever LE, ATL or RPLS is suspected, fludarabine treatment should be stopped. Patients should be monitored and should undergo brain imaging, preferably utilizing MRI. If the diagnosis is confirmed, fludarabine therapy should be permanently discontinued.

Tumour lysis syndrome

Tumour lysis syndrome has been reported in CLL patients with large tumour burdens. Since Fludara can induce a response as early as the first week of treatment, precautions should be taken in those patients at risk of developing this complication, and hospitalisation may be recommended for these patients during the first course of treatment.

Transfusion-associated graft-versus-host disease

Transfusion-associated graft-versus-host disease (reaction by the transfused immunocompetent lymphocytes to the host) has been observed after transfusion of non-irradiated blood in Fludara treated patients. Fatal outcome as a consequence of this disease has been reported with a high frequency. Therefore, to minimise the risk of transfusion-associated graft-versus-host disease, patients who require blood transfusion and who are undergoing, or who have received treatment with Fludara should receive irradiated blood only.

Skin cancer

The worsening or flare up of pre-existing skin cancer lesions as well as new onset of skin cancer has been reported in some patients during or after Fludara therapy.

Impaired state of health

In patients with impaired state of health, Fludara should be given with caution and after careful risk/benefit consideration. This applies especially for patients with severe impairment of bone marrow function (thrombocytopenia, anaemia, and/or granulocytopenia), immunodeficiency or with a history of opportunistic infection.

Renal impairment

The total body clearance of the principle plasma metabolite 2-F-ara-A shows a correlation with creatinine clearance, indicating the importance of the renal excretion pathway for the elimination of the compound. Patients with reduced renal function demonstrated an increased total body exposure (AUC of 2F-ara-A). There are limited clinical data available in patients with impairment of renal function (creatinine clearance < 70 ml/min).

Fludara must be administered cautiously in patients with renal insufficiency. In patients with moderate impairment of renal function (creatinine clearance between 30 and 70 ml/min), the dose should be reduced by up to 50% and the patient should be monitored closely (see section 4.2). Fludara treatment is contraindicated if creatinine clearance is < 30ml/min (see section 4.3).

Older people

Since there are limited data for the use of Fludara in older people (> 75 years), caution should be exercised with the administration of Fludara in these patients.

In patients aged 65 years or older, creatinine clearance should be measured before start of treatment, see “Renal impairment” and section 4.2.

Pregnancy

Fludara should not be used during pregnancy unless clearly necessary (e.g. life-threatening situation, no alternative safer treatment available without compromising the therapeutic benefit, treatment cannot be avoided). It has the potential to cause foetal harm (see sections 4.6 and 5.3). Prescribers may only consider the use of Fludara, if the potential benefits justify the potential risks to the foetus.

Women should avoid becoming pregnant while on Fludara therapy.

Women of childbearing potential must be apprised of the potential hazard to the foetus.

Contraception

Women of child-bearing potential or fertile males must take effective contraceptive measures during and at least for 6 months after cessation of therapy (see section 4.6).

Vaccination

During and after treatment with Fludara, vaccination with live vaccines should be avoided.

Retreatment options after initial Fludara treatment

A crossover from initial treatment with Fludara to chlorambucil for non responders to Fludara should be avoided because most patients who have been resistant to Fludara have shown resistance to chlorambucil.

Change to Fludara IV

The reported incidence of nausea/vomiting was higher with the oral than the i.v. formulation. If this presents a persistent clinical problem it is recommended to switch to the i.v. formulation.

Excipients

Each Fludara 10 mg film-coated tablet contains 74.75 mg lactose monohydrate. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicine.

In a clinical investigation using intravenous Fludara in combination with pentostatin (deoxycoformycin) for the treatment of refractory chronic lymphocytic leukaemia (CLL), there was an unacceptably high incidence of fatal pulmonary toxicity. Therefore, the use of Fludara in combination with pentostatin is not recommended.

Dipyridamole and other inhibitors of adenosine uptake may reduce the therapeutic efficacy of Fludara.

Clinical studies and in vitro experiments showed that during use of Fludara in combination with cytarabine the intracellular peak concentration and intracellular exposure of Ara-CTP (active metabolite of cytarabine) increased in leukaemic cells. Plasma concentrations of Ara-C and the elimination rate of Ara-CTP were not affected.

In a clinical investigation, pharmacokinetic parameters after peroral administration were not significantly affected by concomitant food intake (see section 5.2).

Fertility

Women of childbearing potential must be apprised of the potential hazard to the foetus.

Both sexually active men and women of childbearing potential must take effective contraceptive measures during and at least for 6 months after cessation of therapy (see section 4.4).

Pregnancy

Preclinical data in rats demonstrated a transfer of Fludara and/or metabolites through the placenta. The results from intravenous embryotoxicity studies in rats and rabbits indicated an embryolethal and teratogenic potential at the therapeutic doses (see section 5.3).

There are very limited data of Fludara use in pregnant women in the first trimester.

Fludara should not be used during pregnancy unless clearly necessary (e.g. life-threatening situation, no alternative safer treatment available without compromising the therapeutic benefit, treatment cannot be avoided). Fludara has the potential to cause foetal harm. Prescribers may only consider the use of Fludara, if the potential benefits justify the potential risks to the foetus.

Lactation

It is not known whether this drug or its metabolites are excreted in human milk.

However, there is evidence from preclinical data that fludarabine phosphate and/or metabolites transfer from maternal blood to milk.

Because of the potential for serious adverse reactions to Fludara in breast-fed infants, Fludara is contraindicated in nursing mothers (see section 4.3).

Fludara may reduce the ability to drive and use machines, since e.g. fatigue, weakness, visual disturbances, confusion, agitation and seizures have been observed.

Summary of safety profile

Based on the experience with the use of Fludara, the most common adverse events include myelosuppression (neutropenia, thrombocytopenia and anaemia), infection including pneumonia, cough, fever, fatigue, weakness, nausea, vomiting and diarrhoea. Other commonly reported events include chills, oedema, malaise, peripheral neuropathy, visual disturbance, anorexia, mucositis, stomatitis and skin rash. Serious opportunistic infections have occurred in patients treated with Fludara. Fatalities as a consequence of serious adverse events have been reported.

Tabulated list of adverse reactions

The table below reports adverse events by MedDRA system organ classes (MedDRA SOCs). The frequencies are based on clinical trial data regardless of the causal relationship with Fludara. The rare adverse reactions were mainly identified from the post-marketing experience.

System Organ Class	Very Common (≥1/10)	Common (≥1/100 to <1/10)	Uncommon (≥1/1,000 to <1/100)	Rare (≥1/10,000 to <1/1,000)
Infections and infestations	Infections / Opportunistic infections (like latent viral reactivation, e.g. progressive multifocal leukoencephalopathy, Herpes zoster virus Esptein-Barr-virus), pneumonia			Lympho-proliferative disorder (EBV-associated)
Neoplasms benign, malignant and unspecified (incl cysts and polyps)		Myelodysplastic syndrome and Acute Myeloid Leukaemia (mainly associated with prior, concomitant or subsequent treatment with alkylating agents, topoisomerase inhibitors or irradiation)
Blood and lymphatic system disorders	Neutropenia, anaemia, thrombocytopenia	Myelosuppression
Immune system disorders			Autoimmune disorder (including autoimmune haemolytic anaemia, Evan's syndrome, thrombocytopenic purpura, acquired haemophilia, pemphigus
Metabolism and nutrition disorders		Anorexia	Tumour lysis syndrome (including renal failure, metabolic acidosis, hyperkalaemia, hypocalcaemia, hyperuricaemia, haematuria, urate crystalluria, hyperphosphataemia)
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