Please note that, once again, cannabis shows promise:
"The Cannabinoids, CBDA and THCA, Rescue Memory Deficits and Reduce Amyloid-Beta and Tau Pathology in an Alzheimer’s Disease-like Mouse Model"
I have been developing the techniques to produce hemp-containing capsules to reduce nausea. The CBDA acts on 5HT-3A receptors to shut it down with stunning effectiveness. And it is not expensive.
Hate to say this, but the Clinical Trials for this are currently canceled due to not showing any results...there are a lot more starting up, but it's not a good sign!