Were you looking for information on Avastin? Avasta is a common misspelling of Avastin.
Avastin® is used along with chemotherapy medicines to treat several different types of cancer. By binding to and inhibiting a protein that encourages the growth of new blood vessels, the cancer is essentially "starved" of its blood supply. Avastin, which is only available by prescription, is given by injection at your healthcare provider's office. Side effects include stomach pain, fatigue, and nausea.
(Click Avastin to learn more, including more information on how the drug works, additional side effects, and tips and precautions for those taking it.)