I have to admit, I did not realize CS could stop the histamine reaction until about a year ago when my wife's throat starting closing up because of an allergic reaction to some dust she kicked up while cleaning. She was getting to the point where it was getting progressively more difficult to breathe, and then she remembered the jars of CS I had made and took some. She got relief within minutes and completely reversed the reaction within an hour.
No trip to the hospital and steroids or whatever they use for that. Cheap and effective. No wonder Big Pharma hates it.