Where can I find Methylene Blue Stain?

I have a project due in less than a week, im doing a project on stimulus and I need the stain Methylene Blue Stain, it is sort of like DNA or RNA. I need any scientist or professinal with the stain to tell me where to get it at. I need truth, no joking around, my medical career depends on this. I live in Jacksonville, FL and so i need for the closet store. Please anyone tell me where I can get it from. Thanks for your help.