STUDY OF A LIQUID EXTRACT WITH A CALMING EFFECT DERIVED FROM THE ROOTS AND RHIZOMES OF THE COMMON PEONY (PAEONIA OFFICINALIS). European Journal of Interdisciplinary Research and Development , [S. l.], v. 56, p. 165–173, 2026. Disponível em: https://ejird.journalspark.org/index.php/ejird/article/view/2289. Acesso em: 28 oct. 2026.