Not Medical Advice: Yellow, oval-shape pill with S 901 imprint has been identified as Alprazolam 0.5 mg.
Alprazolam belongs to the group of drugs called benzodiazepines. It affects chemicals in the brain that may be unbalanced in people with anxiety.
Alprazolam is used to treat anxiety disorders, panic disorders, and anxiety caused by depression, tinnitus and dysautonomia.
Alprazolam 0.5 mg is classified as a Schedule 4 controlled substance under the Controlled Substance Act (CSA).
You can take an active role in staying healthy by making sure you take your medicines safely. Check out some Tips for Taking Medicine Safely, shared by NIHSeniorHealth.