I’m thinking the OP is talking about Unisom, aka doxylamine. Unisom is a sleep aid brand with two different forms, DPH (Benedryl) or Doxylamine. The packaging does make it seem like it’s melatonin sometimes. Doxy is like the heroin of recreational Benedryl use, not as uncomfortable and takes a very low dose to cause the visuals. 1st gen anti-histamines are just colloquially referred to as Benedryl so it’s makes sense to me. Even when I was taking Doxy often, 3 pills could get me started on a trip