Emilio Gonzalez, left, participated in a clinical trial of a cannabinoid treatment for agitation in people with advanced dementia. His son, Dennys Gonzalez, right, said it eased his father’s distress and frustration.

Emilio Gonzalez, left, participated in a clinical trial of a cannabinoid treatment for agitation in people with advanced dementia. His son, Dennys Gonzalez, right, said it eased his father’s distress and frustration.