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Gemcitabine

Gemcitabine, sold under the brand name Gemzar, among others, is a chemotherapy medication used to treat a number of types of cancer. More

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Description

Gemcitabine, sold under the brand name Gemzar, among others, is a chemotherapy medication used to treat a number of types of cancer.

Generic Name

Gemcitabine

Chemical names

Gemcitabine; Gemzar; 2',2'-Difluorodeoxycytidine; Gemcitabina

Brand names

Celgem, Abingem, Celzar, Biogem, Cytogem, Gem-On, Emcitaben, Gemacta, Gembin, Gemcite, Gemcimine, Gemitrate, Gemita, Gemizan, Gempower, Gemspera, Gemtaz, Lifogem, Oncogem, Shancyte, Xtroz

IUPAC name

4-amino-1-[(2R,4R,5R)-3,3-difluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2-dihydropyrimidin-2-one

Pharmacokinetics

Excreted in urine.

Actions

Gemcitabine is an antineoplastic anti-metabolite. Anti-metabolites masquerade as purine or pyrimidine - which become the building blocks of DNA. They prevent these substances becoming incorporated in to DNA during the "S" phase (or DNA synthesis phase of the cell cycle), stopping normal development and division. 

Dosage/Dosage form

1000 mg/m2 on days 1, 8 and 15 of each 28-day cycle; or 1250 mg/m2 on days 1 and 8 of each 21-day cycle as IV.

Therapeutic uses

Used to treat certain types of cancers.

Adverse effects/Side effects

Bone marrow suppression as manifested by leukopenia, thrombocytopenia, anaemia and myelosuppression. Rashes; influenza-like symptoms; renal impairment, interstitial pneumonia, pulmonary toxicity, pulmonary oedema. Proteinuria, haematuria and haemolytic uraemic syndrome. Elevation of serum transaminase. Potentially Fatal: Oesophagitis and pneumonitis when given with radical radiotherapy to the thorax.

Interaction

May increase the anticoagulant effect of warfarin when used together.

Contraindications

Concurrent radical radiotherapy; pregnancy, lactation; hypersensitivity

Storage

Store at 25 ?

Information

Molecular weight

263.1981

Molecular formula

C9H11F2N3O4

CAS number

95058-81-4

Precautions

  • Children, hepatic and renal impairment.
  • May impair ability to drive or operate machinery.
  •  Discontinue on 1st sign of microangiopathic haemolytic anaemia.
  •  Prolonged infusion time (>60 minutes) and more frequent than wkly dosing may increase toxicity.
  • Monitor CBC before every dose.
  • Increased risk of haemolytic uraemic syndrome and/or thrombocytcpenic purpura which may lead to irreversible renal failure.