Hello, tusher8604, Liver enzyme elevations are not an expected side effect of Diphenhydramine. You mention you drank alcohol a month ago. If you were drinking on a regular basis before, it is possible that your liver enzymes could remain abnormal especially ALT,GGT, not so much the LDH & SGOT. You also mention that you are on a low calorie diet. You must be doing this to lose weight. If you are 10-15 % overweight , it is possible you may have Fatty Liver (Non-Alcoholic-Liver-Disease). Get a complete liver profile, blood count,diabetes check, and also screening for Hepatitis B & C. If you are on any other medications such as Ibuprofen,Naproxen (NSAIDs) , they can cause liver damage. Hope this helps you so that you can discuss with your doctor. I wish you well.