CAPECITABINE- capecitabine tablet
Capecitabine-Warfarin Interaction: Patients receiving concomitant capecitabine and oral coumarin-derivative anticoagulant therapy should have their anticoagulant response (INR or prothrombin time) monitored frequently in order to adjust the anticoagulant dose accordingly. A clinically important Capecitabine-Warfarin drug interaction was demonstrated in a clinical pharmacology trial [see Warnings and Precautions (5.1) and Drug Interactions (7.1)]. Altered coagulation parameters and/or bleeding, including death, have been reported in patients taking capecitabine concomitantly with coumarin-derivative anticoagulants such as warfarin and phenprocoumon. Postmarketing reports have shown clinically significant increases in prothrombin time (PT) and INR in patients who were stabilized on anticoagulants at the time capecitabine was introduced. These events occurred within several days and up to several months after initiating capecitabine therapy and, in a few cases, within 1 month after stopping capecitabine. These events occurred in patients with and without liver metastases. Age greater than 60 and a diagnosis of cancer independently predispose patients to an increased risk of coagulopathy.
- Capecitabine tablets are indicated as a single agent for adjuvant treatment in patients with Dukes’ C colon cancer who have undergone complete resection of the primary tumor when treatment with fluoropyrimidine therapy alone is preferred. Capecitabine tablets were non-inferior to 5-fluorouracil and leucovorin (5-FU/LV) for disease-free survival (DFS). Physicians should consider results of combination chemotherapy trials, which have shown improvement in DFS and OS, when prescribing single-agent capecitabine tablets in the adjuvant treatment of Dukes’ C colon cancer.
- Capecitabine tablets are indicated as first-line treatment of patients with metastatic colorectal carcinoma when treatment with fluoropyrimidine therapy alone is preferred. Combination chemotherapy has shown a survival benefit compared to 5-FU/LV alone. A survival benefit over 5-FU/LV has not been demonstrated with capecitabine tablets monotherapy. Use of capecitabine tablets instead of 5-FU/LV in combinations has not been adequately studied to assure safety or preservation of the survival advantage.
- Capecitabine tablets in combination with docetaxel are indicated for the treatment of patients with metastatic breast cancer after failure of prior anthracycline-containing chemotherapy.
- Capecitabine tablets monotherapy is also indicated for the treatment of patients with metastatic breast cancer resistant to both paclitaxel and an anthracycline-containing chemotherapy regimen or resistant to paclitaxel and for whom further anthracycline therapy is not indicated (e.g., patients who have received cumulative doses of 400 mg/m 2 of doxorubicin or doxorubicin equivalents). Resistance is defined as progressive disease while on treatment, with or without an initial response, or relapse within 6 months of completing treatment with an anthracycline-containing adjuvant regimen.
Capecitabine tablets should be swallowed whole with water within 30 minutes after a meal. Capecitabine tablets are a cytotoxic drug. Follow applicable special handling and disposal procedures. 1 If capecitabine tablets must be cut or crushed, this should be done by a professional trained in safe handling of cytotoxic drugs using appropriate equipment and safety procedures. Capecitabine tablets dose is calculated according to body surface area.
Monotherapy (Metastatic Colorectal Cancer, Adjuvant Colorectal Cancer, Metastatic Breast Cancer)
The recommended dose of capecitabine tablets is 1250 mg/m 2 administered orally twice daily (morning and evening; equivalent to 2500 mg/m 2 total daily dose) for 2 weeks followed by a 1-week rest period given as 3-week cycles (see Table 1).
Adjuvant treatment in patients with Dukes’ C colon cancer is recommended for a total of 6 months [ie, capecitabine tablets 1250 mg/m 2 orally twice daily for 2 weeks followed by a 1-week rest period, given as 3-week cycles for a total of 8 cycles (24 weeks)].
|Dose Level 1250 mg/m 2 Twice a Day||Number of Tablets to be Taken at Each Dose (Morning and Evening)|
|Surface Area (m 2 )||Total Daily Dose* (mg)||150 mg||500 mg|
|*Total Daily Dose divided by 2 to allow equal morning and evening doses|
|1.26 to 1.37||3300||1||3|
|1.38 to 1.51||3600||2||3|
|1.52 to 1.65||4000||0||4|
|1.66 to 1.77||4300||1||4|
|1.78 to 1.91||4600||2||4|
|1.92 to 2.05||5000||0||5|
|2.06 to 2.17||5300||1||5|
In Combination With Docetaxel (Metastatic Breast Cancer)
In combination with docetaxel, the recommended dose of capecitabine tablets is 1250 mg/m 2 twice daily for 2 weeks followed by a 1-week rest period, combined with docetaxel at 75 mg/m 2 as a 1-hour intravenous infusion every 3 weeks. Pre-medication, according to the docetaxel labeling, should be started prior to docetaxel administration for patients receiving the capecitabine tablets plus docetaxel combination. Table 1 displays the total daily dose of capecitabine tablets by body surface area and the number of tablets to be taken at each dose.
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