epi pens are known to expire and turn a brownish colour...ever wonder why the pharmacy asks for them to be returned if not used? The epi pen has the same type of reaction in the body as someone taking adrenochrome, thus is a good substitute for those that need a fix. The adrenaline in the epi pen becomes more potent if the use is for that purpose. Epi pens are expensive for a reason. If you think of the allergic rxn Elon is talking about as a reaction chromers are having to something in the shots (like hcq which is bad for chromers)...there is more to what he is pointing at.