what pill has upjohn 90 imprinted on it it is a blue ovol pill?

It's alprazolam 1mg tablet.

Alprazolam is in a group of drugs called benzodiazepines. It works by slowing down the movement of chemicals in the brain that may become unbalanced. This results in a reduction in nervous tension (anxiety).

Alprazolam is used to treat anxiety disorders, panic disorders, and anxiety caused by depression.