Avastin (Bevacizumab)

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Trade name: Avastin  avastin

 

Generic name: Bevacizumab 

Therapeutic Class:   monoclonal antibody” and “anti-angiogenesis

Manufacturer / Distributor :  Roche

Availability:  Avastin is available by prescription only

Indications : Avastin is used to treat the following cancers:

Metastatic colorectal cancer – in the treatment of metastatic colorectal cancer, Avastin is usually given at the following doses: 5 mg/kg or 10 mg/kg body weight, administered once every 2 weeks; 7.5 mg/kg or 15 mg/kg administered once every 3 weeks through intravenous infusion.

Metastatic breast cancer – to treat metastatic breast cancer, Avastin is recommended at 10 mg / kg of body weight, administered once every 2 weeks; or the dosage of 15 mg/kg body weight once every 3 weeks, given by infusion into a vein .

Non-small cell Lung cancer (NSCLC) – in the treatment of NSCLC, Avastin is given in combination with a p latinum based chemotherapy up to 6 cycles of treatment, followed by an Avastin monochemotherapy ( avastin only) until remission. The recommendation is 7.5 mg/kg or 15 mg/kg body weight given once every 3 weeks by intravenous infusion.

Advanced or metastatic kidney cancer – if you have an advanced kidney cancer, the dosage of Avastin that your doctor can recommend is 10 mg/kg of body weight, given once every 2 weeks by intravenous infusion.

Avastin can be used to treat age-related macular degeneration and other forms of cancers such as:

  • ovarian cancer
  • prostate cancer
  • non-metastatic unresectable liver cancer
  • metastatic or unresectable locally advanced pancreatic cancer
  • Glioblastoma multiforme (GBM), an aggressive form of primary brain tumor.

Dosage form: Avastin is given by infusion into a vein (intravenous, IV)

Dosage:  Avastin should be administered by professionals with the greatest care possible. It is recommended that the drug be given in hospital or health care center equipped for its preparation. Avastin is given by intravenous infusion every 14 days. In general, the first dose is administered by intravenous infusion over 90 minutes. Depending on the reaction of your body to the drug, the second infusion will last 60 minutes. If the second infusion is well tolerated by your body, all subsequent infusions may be administered in 30 minutes.

If your body’s reaction to the medication is not life threatening, dosage reduction is not recommended; the drug must be taken as indicated. If life threatening reactions develop however, the treatment should be stopped permanently or temporarily.

Overdose: the highest dose ever given to humans is 20 mg / kg of body weight every 2 weeks. In the majority of patients, however, Avastin overdose causes severe migraine and other health problems. If you experience symptoms related to overdose during the treatment, call your doctor or pharmacist right away.  

Missing dose: if there are no major complications, treatment should not be interrupted. If for some reasons you will not be present for the treatment, talk to your doctor in advance so that he can do the necessary. Misusing chemotherapy drugs, including Avastin, can be nefast.

Contraindication – Avastin is not recommended or should be used with precaution in the following circumstances:

  • women who are pregnant or nursing
  • seniors
  • children and adolescents
  • chronic renal failure
  • chronic hepatic disease (liver disease)
  • allergic to Avastin or any of its  ingredients
  • allergy to products derived from chinese hamster ovary (CHO) cells or humanized antibodies
  •   Untreated cancer that has spread into the central nervous system.

Mechanism of Action (MOA): Avastin is an antineoplastic agent that works by preventing the production of blood vessels that nourish the cancer cells, which may then inhibit the growth of the tumor.

 

Interactions:   combination of Avastin with certain drugs can reduce its curative effect, and even cause health problems. Therefore, before beginning the treatment, tell your doctor about prescription or/and nonprescription medications you are taking. It is important to have the advice of your doctor before taking vitamins, nutritional supplements and over-the-counter drugs.

Side effects: Avastin can bring good results in some cancer patients; however, it tends to cause adverse effects, which can be serious. The most common Avastin side effects include: redness, itching, or scaling of the skin; dizziness; fatigue; bleeding nose; bleeding gums; taste Changes; dry mouth; decreased appetite; heartburn; diarrhea; weight loss; sores on the skin or in the mouth.

Avastin can cause serious side effects which require immediate medical attention; contact your doctor immediately if you experience any of these symptoms:

fainting

seizures

chest/neck pain

shortness of breath

loss of vision

vomiting Blood

black or bloody stools

dry, hacking cough

severe vaginal bleeding

slow or difficult speech

weakness or numbness of an arm or leg

dizziness, faintness or confusion

coughing, gagging, or choking

Severe headache (which can be a sign of overdose)

Pain or swelling of the face, eyes, stomach, hands, feet, ankles, or lower legs.

 

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