FIELD : medicine; pharmaceuticals.SUBSTANCE : invention relates to the pharmaceutical and food industry, in particular to medicines and dietary supplements with a sedative, anxiolytic and antispasmodic action. Sedative agent for express relaxation includes glycine, tryptophan, menthol and excipients in the following ratio, wt.?% : glycine 50–65, tryptophan 20–30, menthol 1–3, excipients - the rest.EFFECT : invention allows, due to a selected ratio of components, to obtain a biologically active agent with an accelerated manifestation of the sedative effect (express effect) and reduced side effects.1 cl, 2 ex