Here's an intriguing recent resveratrol study of a chitosan-resveratrol complex lipid nasal spray targeting the brain. The abstract doesn't specify the subjects but one of the figures online suggests it was mice.
https://www.ncbi.nlm...pubmed/29486302
And here's another recent but unpublished work in progress with more detail on a chitosan-resveratrol nasal spray. Not of the same authors of the published study so not necessarily the exact formulation tested.
https://www.preprint...077/v1/download
Howard