Alprazolam LPH 1mg 3783 Alprazolam is a drug, an anxiolytic (anti-anxiety agent), a alprazolam lph medium-term benzodiazepine derivative that is used to treat anxiety disorders, panic attacks. Alprazolam is close to triazolam by its chemical structure, differs from the absence of the Cl atom at phenyl at position 6. Alprazolam has less pronounced hypnotic effect. It is used mainly for