I have been having bleeding over the past few days during my bowl movements. I was advised that this is likely due to stress and stomach ulcers. My question is this: Does diphenhydramine have the same side effects as anti-inflammatories? I have a friend who suffers from stomach pain that was suggested by his doctor to be caused by ulcers likely induced by over use of the following anit-inflammatory medications: bismuth salicylate (such as Pepto), naproxen (such as Aleve) & ibupropen (such as Advil). I weight 150lbs & am 23. I taken 100mg of diphenhydramine every night for years.