A month ago mum suffered massive heart attack. They put her on heart medication. Discharged her and she stopped breathing next day - taken back in, taken off beta blockers and halved the dose of donepezil. Brought her home two days later passed out. Took her back in and decided the donepezil was slowing her heart beat. Now I have her home and her behaviour is deteriorating - does anyone know if there is any other medication she can go on? It has probably been the worst month ever. I care for her full time and do a full time job from home as well.