Use of Avastin could lead to many side effects. Some of its common side effects are not worrisome. They need no treatment. But it could also cause many severe side effects. The patient needs immediate medical help if any of the side effects occur or any common side effects worsen or become persistent.

Common Side Effects of Avastin

Use of Avastin could lead to following common side effects. Call your doctor if any of these common side effects worsen or become persistent.

• Headache
• Diarrhea
• Stomach pain
• Lack of appetite
• Dry mouth
• Increased and frequent thirst
• Dizziness
• Cough
• Alteration in speech
• Nausea or vomiting
• Constipation
• Mouth sores

Severe Side Effects of Avastin

Avastin could produce many severe side effects. It is advisable to immediately call your doctor if any of these severe side effects occur, as it could be fatal.

• It could produce allergic reactions such as hives, rash, itching, breathing problem, swelling of face, lips, tongue, or throat.
• It could cause persistent stomach pain accompanied with vomiting or constipation.
• Its use could lead to blood in stool. It could also cause black or tarry stools.
• As a severe side effect of using Avastin a patient could suffer vomiting like blood or coffee grounds.
• Use of Avastin could also produce sudden numbness or weakness, especially in one side of the body.
• Its use could also yield sudden headache or confusion.
• Its use could also lead to alteration in speech, vision and balance.
• It could cause chest pain or patient might feel heavy. The pain could be spreading to the arm or shoulder.
• Patient might have nausea, sweating, and general ill feeling, while using this medicine.
• It could cause elevated blood pressure.
• It could lead to breathing difficulties.
• It could also cause fast weight gain or swelling in the body.
• It could hinder urination. Patients might have less or no urine.
• It could also lead to fever, chills, body aches and other flu like symptoms as a side effect.
• Some patients might have feeling of passing out.
• It could also cause patches or sores inside mouth or on lips.
• Its use could cause unusual and persistent bleeding from nose, gums, or any other part in some patients.
• It could cause swelling of ankles or feet.
• It could also cause unusual tiredness.
• It could cause fast heartbeat or fainting feeling.
• It could also lead to infections.
• It could also cause muscle cramp or muscle loss.
• Its use could lead to frothy or dark urine and difficulty in urination.
• It could also lead to yellowing of eyes and skin.
• It could cause serious medical conditions such as heart attack, angina or stroke.
• In rare conditions use of Avastin could cause reversible posterior leukoencephalopathy syndrome or RPLS.
• It could lead to mood or behavior changes.

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