It is available in several countries, including the United Kingdom, Australia and Canada, and was approved for sale in the United States by the Food and Drug Administration (FDA) on August 30, 2007.
它在多个国家得以使用，包括英国、澳大利亚和加拿大等，而且它在2007年8月30日被美国食品药品监督管理局（FDA）批准得以在美国销售。