"Got bit by a rattlesnake or eat a poisonous mushroom and looking for an antidote? Look no further than the wonder-drug methylene blue – a medicinal blue dye that acts as an antidote for chemical poisoning and overdose."
https://www.endalldisease.com/methylene-blue-miracle-antidote-for-poisonings-and-overdoses/
Do not take Methylene Blue (anti-oxidant) with Chlorine Dioxide (pro-oxidant).
Methylene Blue stays in the body for about 5.25 hours while Chlorine Dioxide stays in the body for 90 minutes.