DUO-VENN® is a trademarked combination of venom preparations from two snakes: water moccasin and cobra. It’s created by combining the novel effects of viper venom (cottonmouth, Agkistrodon piscivorus) and cobra venom (Naja naja) into a novel formula that can be delivered by mouth using a simple oral spray mechanism or as a topical roll-on gel. This novel combination of ingredients was developed in order to provide the best broad spectrum analgesic activity with the highest safety factor.