I took you last night to combat an allergic reaction. Today I noticed I was a complete space cadet, so I read up on you on the trusty Internets.
Good grief! The half life of diphenhydramine can be from 8-10 hours?!!?! Benadryl, you should be ashamed of yourself. No wonder I was a zombie throughout the spring allergy season.
No more, Mr. Benadryl. I will not tolerate any more of your abuse, even if it means I have to switch to using a neti pot to combat allergies.
No longer yours truly,