BRAND NAME: Halaven. DRUG CLASS AND MECHANISM: Eribulin mesylate is a chemotherapeutic medicine approved to treat metastatic breast cancer, an advanced form of breast cancer that has spread to other parts of the body.RESCRIBED FOR: Eribulin is a prescription chemotherapy medicine used to treat patients with metastatic breast cancer. Eribulin should only be used in patients who have already received at least 2 other types of anti-cancer medicines, including an anthracycline and a taxane.
According to the US Census Bureau's population clock, the estimated 2015 United States population (July 2015) is over 321.3 million. This differs a bit from the 325.1 million estimated by the United Nations.
1 The population of the United States is estimated at 322,583,006 as of July 1 2014. 2  United States' population is equivalent to 4.45% of the total world population. 3  The U.S. ranks number 3 in the list of countries by population.