The hypotensive effect of the aqueous calyx extract of Hibiscus sabdariffa may occur through the attenuation of Autonomic nervous system activity. Nigerian Journal of Physiological Sciences, [S. l.], v. 36, n. 2, p. 203–209, 2021. DOI: 10.54548/njps.v36i2.9. Disponível em: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/2363. Acesso em: 5 huhti. 2026.