Printable Apothecary labels for Halloween - Lia Griffith Oct 20, 2014 · For the snake venom and arsenic, water dyed with food coloring works perfectly. Download the set of labels and then simply print these onto a white full sheet label paper and trim. And check out our newest set of printable labels here! Arsenic Poison Apothecary Labels. Snake Venom Apothecary Labels. Feathers of the Crow Apothecary Labels