My 12yr old son is taking desmopressin for bedwetting. He has been on it for almost a year. He is taking 3 tablets@.02mg/night. He was taking 2 tablets, but it wasn't working. Now his dr. has upped his prescription to 3tablets/night. I am worried that this might be too high of a dosage for a 12yr. old. Sometimes 3 tablets don't even work though. Also, I am wondering if there is any long-term affects from desmopressin. I tried to find out information online but couldn't find any information on it.