British North America Act. British North America Act, law passed by the British Parliament in 1867 that provided for the unification of the Canadian provinces into the dominion of Canada.Until 1982 the act also functioned as the constitution of Canada.ritish North America Act. British North America Act, law passed by the British Parliament in 1867 that provided for the unification of the Canadian provinces into the dominion of Canada.
Lipitor's generic name is atorvastatin. Two generic drugmakers, Ranbaxy and Watson, can start selling generic atorvastatin in the U.S. right away. Due to complex generic drug laws, other generic drugmakers will have to wait 180 days, until May 2012, to offer their own generic versions of Lipitor.
Lipitor (sold generically as atorvastatin calcium) is Pfizerâs premier cholesterol-lowering drug. With cumulative sales exceeding $130 billion, Lipitor holds the coveted status of the worldâs top-selling prescription drug of all time. Lipitor is the most popular of all statins, which represent the most widely-prescribed class of drugs in the United States.