The issue in Nevada, if you read the release closely, is that the grubernator is "worried" that lupus and rheumatoid patients who already take the medicine will have difficulty finding a supply if the hoarders get there first.
It's a commonly available drug. As the Cheeze-Its commercial says - "Get your own box. We'll make more".
It would be interesting to track the supply of Hydroxychloroquine within Nevada to determine if the stocks are moving, regardless of the prescription usage. Is it being funneled to a state government reserve or dispersed within the state government hierarchy?