I only respond to questions in English. Could you please clarify or rephrase your question related to supplements?

Probiotics have been studied for their potential effects on mental health, particularly in relation to anxiety and depression. The gut microbiome is known to influence cognitive and psychological functions through the microbiota–gut–brain axis¹. Probiotic supplements are thought to provide positive effects on mental health, with many studies suggesting they can help alleviate symptoms of anxiety and depression¹.

One study revealed that probiotics administration had beneficial effects on mood in healthy individuals, suggesting its potential role as an adjunct therapy for depression and a non-invasive strategy for maintaining mental well-being². The study highlighted improvements in mood, sleep quality, and reductions in depressive mood states².

These studies suggest that while probiotics may contribute to calmness and improved mood, the exact mechanisms, optimal dosing, and treatment timing require further research to be well understood. It's also noted that probiotics might offer novel, personalized treatment options for mood disorders¹.