My dad was prescribed antidepressant in February and like a month later his GP prescribed him Namenda then he started having short term memory problems. About one month later a PSYCHIATRIST took him off Namenda and prescribed Donezepil. He has been taking Donezepil for 3+ months now. Two weeks ago I took him off Donezepil (I believe he never needed it in the first place) and I have noticed a difference. Could it be that the antidepressant is giving him short term memory problems and the Donezepil wasnt helping? He takes Zoloft