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What is Tarceva? Tarceva (erlotinib) is a cancer medicine that interferes with the growth of cancer cells and slows their spread in the body. Tarceva is used to treat non-small cell lung cancer or pancreatic cancer that has spread to other parts of the body (metastatic). Tarceva is usually given after other cancer medicines have been tried without success.
Cascara is used as a laxative for constipation, as well as a treatment for gallstones, liver ailments, and cancer. Some people use it as a âbitter tonic.â. In foods and beverages, a bitterless extract of cascara is sometimes used as a flavoring agent.he dried bark is used to make medicine. Cascara used to be approved by the federal Food and Drug Administration (FDA) as an over-the-counter (OTC) drug for constipation. However, over the years, concerns were raised about cascaraâs safety and effectiveness.