What type of Xanax is .5?

The .5 refers to the dosage of the Xanax. Xanax is a brand-name medication for the drug alprazolam. Alprazolam is a benzodiazepine, which is a type of medication used to treat anxiety and panic disorders. It is also sometimes used to treat seizures. Xanax is typically prescribed in doses of .25 milligrams (mg), .5 mg, 1 mg, or 2 mg. The .5 mg dose is a relatively low dose of Xanax.