My husband was diagnosed with MCI in 2019. We saw a neurologist and then a geriatrician, just to get a wider perspective. The geriatrician mentioned that there is a patch, Exelon (generic is rivastigmine) that may slow down the progression. It's changed daily. Only side effect might be diarrhea and not all insurance companies cover it. We have spent so many years trying to stay ahead of IBS and other lower GI problems but decided to try it anyway and our insurance does cover it. His intestinal problems have, if anything, improved, and I believe the patch has kept him "here" much longer than if he hadn't taken it. Of course, there's no knowing how the dementia would have proceeded without the patch, but we are happy we took the chance.