Xanax: Xanax is a benzodiazepine, and its generic name is alprazolam. It works on the central nervous system and helps calm the mind by reducing anxiety. In addition, Yellow Xanax and Blue Xanax are the same but different in strength and dosages. For example, blue Xanax is a pill that contains alprazolam 2mg, while yellow Xanax includes other dosages of alprazolam. Ativan: It also belongs to the benzodiazepines class of drugs and works by enhancing the ability of neurotransmitters in the brain. Moreover, Its generic name is lorazepam.