Had a nice chat with a customer about the no difference between a sleep med with 25 mg of diphenhydramine and a bottle of allergy medicine with 25 mg of diphenhydramine. The big difference was the price, twice as high because it was billed as a sleep aid as opposed to the store brand anti-allergy med. He looked at the labels and was a bit gob smacked, but, he appreciated my explanation and walked off with the bottle of the cheaper allergy med.