Dietary supplement with vitamins, L-tryptophan and 5-HTP. Pharmacist's tip: In short days and little sunshine, vitamins of the B complex, tryptophan and the African black bean ensure a balanced serotonin level. This, in turn, is responsible for a balanced mood and for nerves like tightropes in stressful situations. Who doesn't know them, these heated situations in which it is important to keep a cool head? Moments when we want peace and serenity, but we feel nothing but tension and pure stress inside. So that it doesn't get that far, we recommend VIENNA'S NERVE WOHL.