It's yellow & oval
You are reading the imprint upside down and yes it is generic xanax.
Pill imprint S 901 has been identified as Alprazolam 0.5 mg.
Alprazolam is used in the treatment of anxiety; tinnitus; depression; panic disorder; borderline personality disorder (and more), and belongs to the drug class benzodiazepines. There is positive evidence of human fetal risk during pregnancy. Alprazolam 0.5 mg is classified as a Schedule 4 controlled substance under the Controlled Substance Act (CSA).
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