Takeda Pharmaceutical Company Limited (武田薬品工業株式会社, Takeda Yakuhin Kōgyō Kabushiki-gaisha^?) (TYO: 4502) is the largest pharmaceutical company in Japan, with overseas business offices in Europe and in the United States. Their American subsidiary, Takeda Pharmaceuticals North America, Inc., is based in Deerfield, Illinois. Global research and development is also based in Deerfield. American headquarters were previously located in Lincolnshire, but moved in October, 2006 to a new headquarters in Deerfield, Illinois.

One of their mainstay drugs is Actos, a compound used in the treatment of certain types of diabetes.

Takeda also owns TAP Pharmaceuticals, in cooperation with Abbott Laboratories.

Takeda Pharmaceutical was in 2007 awarded the Bad Product Award 2007 Overall Winner by Consumers International[^[1]. The company advertises the sleeping pills Rozerem to children in its "Back to School"-campaign (“Rozerem would like to remind you that it’s back to school season. Ask your doctor today if Rozerem is right for you.”) The advertisement ran without noting the very serious side effects that this drug can have, including increased thoughts of suicide in already depressed patients. Takeda pharmaceuticals also failed to mention the precautions on its packaging about children using this drug.

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