Vinorelbine, which was approved for medical use in 1994, is a chemotherapy medication indicated for the treatment of certain types of cancer, including breast cancer and non-small cell lung cancer. According to breastcancernow.org, this drug works by “stopping cancer cells from dividing and multiplying, which blocks the growth of the cancer”. Before starting this treatment, make sure you tell your doctor if you’re using other drugs. You should also inform them if you are pregnant or may be pregnant prior to taking Vinorelbine, because this medication may actually harm the fetus. And if you’re not pregnant, using birth control during your treatment is highly recommended. You should also avoid taking Vinorelbine if you are breastfeeding. According to chemocare.com, this medication can cause low blood counts, nausea, muscle weakness, and constipation. As for the following side effects, they require immediate medical care: unusual bleeding, mouth sores, and recurrent episodes of nausea and vomiting. Bear in mind that Vinorelbine is given by injection into a vein or by mouth.