Source on red dye being psychoactive?
I actually thought that particular red dye was banned where I'm from some time back, though I don't recall why. Allergies perhaps? But that's just a guess.
a) Make claims that are not as extraordinary.
b) Back your claims up with evidence.
Making absolutely wild claims without evidence just makes you sound like a quack.
What isn't reasonable is to also expect large numbers of people to take them seriously without evidence (see above for evidence of people questioning unsupported claims).