My OH has been taking Donepezil for two years now. He has had a persistent cough for the past year or so which after many tests the doctors have said is a form of asthma. He has also been suffering night cramps in his calf on and off which seem to becoming more frequent. I was wondering if these could be side effects from the Donepezil. I hope not as would be most reluctant to change this medication and he seems to be doing well on it. Any comments would be welcome.