food colouring...

This is the result of a drink that he loves to buy. I just can't help but take a picture of this because the tongue just turn totally blue like the drink. Is it safe???

There was once he bought the same drink and after that his lip swelled. I couldn't identify anything else that could make his lip swell as he had not eaten anything before that. So it must be the drink!!!

I have to ban him from this brand of drinks.