I have chronic fluid in 1 ear particularly. I have taken all antihistamines going back to 1970's. I have had surgeries (torp) and all antibiotics available but this is not infective in origin. Allergies and particularly eustachian tube dysfunction are primary causes. The question- I have on occasion used 1% atropine ophthalmic soln- 2drops on tongue and 1 in left ear and have had dramatic benefit. I occasionally use lubricant eye drops if necessary for dry eyes. Am I causing any potential harm ?