happened to me too. i was so pissed.I received IV diphenhydramine in the hospital a while back.. at the time I took 75mg for sleep at home but orally. For some reason they gave me 75mg IV instead and the difference was astounding it threw me into a slightly deleterious state even at such a low dose, shadows moving, some CEV’s and sedation was markedly more intense. It wasn’t entirely unenjoyable however I’m not sure I would risk injecting the pills. Just doesn’t sound like a great idea.