Administration of ativan gelNonenteral Routes of Administration for Psychiatric Medications A Literature Review . . . . the efficacy of "ABH," a topical gel containing lorazepam (Ativan. . . . . No signifi cant difference was found in the time of administration. . . . . . . of administration often have a faster effect than oral routes. . Herr J, Farkus J. . Case report: Ativan, benadryl, and haldol (ABH) gel and Ativan . patients do not like rectal medications and would prefer topical administ... more