The Upjohn 90 pill, Upjohn 55 pill and the Upjohn 29 pills are all different strengths of Alprazolam (Xanax) produced by The Upjohn Company a pharmaceutical manufacturing firm founded in 1886 in Kalamazoo, Michigan, by Dr. William E. Upjohn, an 1875 graduate of the University of Michigan medical school. Alprazolam is used to treat anxiety […]