[absolutelastone]

I suspect the lucrative patent system has helped create rather exorbitant costs and restrictions for performing trials, which hinders non-patentable research, ironically.

But both the federal and state govts do fund tons of such research. Some states have specific Alzheimer's trials and funds. I would think they could handle dirt-cheap therapies like this without getting into sweeping political changes. Though I suspect the solution is much harder than just run a trial with the drugs we have, or else we would already be hearing about mountains of evidence from doctors using the medications off-label.