Are there any analogues of the deliriant Diphenhydramine/Benadryl with any recreational value? In the 1960s it was found to inhibit serotonin reuptake, apparently leading to the production of Prozac/Fluoxetine.

I'm aware there is a small minority of people who use DPH as a "recreational" deliriant, but it's effects are generally described as unpleasant, can anyone point me towards information regarding (possibly more recreartional) analogues or if they don't exist, enlighten me as to why?