Methode fight against chemical submission, coloring agent for use in the fight against chemical submission and pharmaceutical composition for the implementation of the method

The present invention relates to a method to fight against chemical submission including: - the dissolution in a drink of a dosage form comprising an active ingredient and at least 0.05 mg, preferably 0.2 to 5 mg, even more preferably from 0.3 to 2 mg of at least one water-soluble coloring agent selected from the indigo carmine or E132, erythrosine or E-127, the brilliant blue FCF, the alphazurine FG, the fast green FCF, the SS quinzarine green, orange II, tartrazine, sunset yellow FCF - detection of the dosage form characterized by the immediate change in the color of the drink; it also relates to the use of said dye to fight against chemical submission, as well as a solid dosage form comprising said non-laminated dye.