ABH Gel: Comforting Cure or Pricey Placebo?

Despite a lack of evidence of benefit, the compounded product ABH gel (lorazepam, diphenhydramine, and haloperidol) continues to be prescribed for individuals in hospice and palliative care settings for the treatment of nausea and vomiting and terminal delirium. More effective and reliable pharmacological and nonpharmacological strategies exist for the treatment of these conditions in the palliative care and hospice settings. We discuss the pharmacokinetic and clinical evidence for the individual components of ABH gel, as well as the compounded product, and attempt to understand the mechanism of effect that some purport to see, as well as why the compound continues to enjoy such a cult following.