Capnat 150mg (Capecitabine)

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Capnat 150mg is an orally-administered chemotherapeutic agent used in the treatment of metastatic breast and colorectal cancers. Capnat 150mg belongs to prodrug, which is enzymatically changes to... Read more
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  • Natco Pharma Ltd.
  • Trade name Capnat 150mg
  • Substance Capecitabine
  • Manufacturer Natco Pharma Limited
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CAPNAT 150MG

Description

Capnat 150mg is an orally-administered chemotherapeutic agent used in the treatment of metastatic breast and colorectal cancers.

Capnat 150mg belongs to prodrug, which is enzymatically changes to fluorouracil (antimetabolite) in the tumor, where it prohibits DNA synthesis and reduces growth of tumor tissue.

Capnat 150mg indication

Capnat 150mg is indicated for the treatment of Colorectal cancer

  • Adjuvant treatment in Duke’s colon cancer
  • First line therapy in colon-rectal cancer metastasis

Breast cance

Capnat 150mg is indicated for the treatment in metastatic breast cancer: used in combination with docetaxel after failure of anthracycline containing chemotherapy

Capnat pharmacology

Capecitabine is a prodrug and belongs to type of chemotherapy called an anti-metabolite. The body converted capecitabine into a common chemotherapy drug called fluorouracil. It blocks cells making and repairing DNA. Cancer cells require to make and repair DNA, so they can grow and replicate.

Pharmacokinetic

Absorption

The peak plasma level at about 1.5 hours

Distribution

The human plasma protein bound to Capecitabine is occurred in less than 60%

Bio-activation and metabolism

Capecitabine is largely metabolized to 5-FU enzymatically. In liver, 60 kDa carboxylesterase hydrolyses to 5’-deoxy-5-fluorocytidine.

Excretion

The route of elimination of Capecitabine is occurred through urine 95.5%

The mean terminal half-life period of Capecitabine is 0.75 hour 

Dosage and administration

Monotherapy

First line therapy of patients with advanced colorectal cancer:

The prescribed dose of Capnat is 1250mg/m2 should be administer orally as twice daily (morning and evening dose 2500mg/m2); treatment follow for 2 weeks followed by 1-week rest period given as 3 weeks cycle

Adjuvant therapy for Duke’s colon cancer:

The prescribed dose of Capnat is 1250mg/m2 orally as twice daily (morning and evening dose 2500mg/m2); for 2 weeks followed by 1 week given as 3 weeks for total 8 cycles (24 weeks)

Breast cancer

Monotherapy:

Prescribed dose is 1250mg/m2 should be administer as orally for twice daily

In combination with docetaxel the recommended dose is 1250mg/m2 of Capnat with 75mg/m2 of docetaxel for 3 weeks

Capnat should be administered within 30 minutes after a meal

In pediatric

The safety and efficacy of the Capnat tablets in pediatric patients has not been established

Side effects

Common side effects of Capnat 150mg

Post marketing effects of Capnat 150mg includes

Contraindication

Capnat 150mg is contraindicated to renal impairment patients

Capnat 150mg is contraindicated in patients with hypersensitivity to Capnat 150mg or other components

Drug interaction

Capnat 150mg combination with warfarin and phenprocoumon, bleeding occurs. These events occurred within several days and even a month also

when combination of phenytoin and Capnat 150mg, toxicity related to elevation of phenytoin levels

The toxicity and concentration of 5-FU increased by Leucovorin. In elderly patients, phenytoin and Leucovorin is administered weekly which may cause; diarrhea, dehydration, enterocolitis which may causes death.

Other than warfarin, there is no drug interaction occurs while concomitant with CYP2C9 substrates

Care should be taken while combination of Capnat 150mg with CYP2C9 substrates

Precaution and warning

Coagulopathy: concomitant with warfarin, anti-coagulant response should be monitored

While using drug may results in bleeding, death; monitor anticoagulant response

When administrating the drug may cause cardiomyopathy and acute decreases in LVEF

Diarrhea: patients with severe diarrhea should be monitored

Cardio toxicity: while taking Capnat 150mg, cardio toxicity occurs like; myocardial infarction, angina, dyshythmias, cardiac arrest sudden death, Cardiomyopathy

Dihydropyrimidine dehydrogenase deficiency

Embryo fetal toxicity: occurs fetal harm; discuss with women of the potential risk to the foetus

On basis of animal studies regarding fetal risk, therapy may impair fertility in females and males of reproductive potential

Hyperbilirubinemia: If hyperbilirubinemia occurs, break off therapy immediately until it resolves or reduces in intensity

Mucocutaneous and dermatologic toxicity

Hematological problems

Care should be taken while using in geriatric patients

Hepatic insufficiency

Pregnancy and lactation

Pregnancy category: D

Capnat 150mg may cause harm to the fetus

Generally, Capnat 150mg should not be recommended in pregnancy or women who are become pregnant

Breast feeding is not recommended

Storage

Capnat 150mg should be stored at 20oC to 25oC (68oF to 77oF)

Missed dose

If dose is forgetting to take then have the dose immediately before next dose arrives or the missed dose should be skipped and follow the regular dosing schedule

Do not double the dose

Must consult with medical oncologist and follow the suggestions

  • Trade name Capnat 150mg
  • Substance Capecitabine
  • Manufacturer Natco Pharma Limited
  • Packaging 120 tablets
  • Country of origin India
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