Extract from leaf of Psidium guajava L depresses the guinea pig atrial contractility by interfering with potassium and calcium channels . Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 45, n. 3, p. 483–489, 2009. DOI: 10.1590/S1984-82502009000300014. Disponível em: https://www.revistas.usp.br/bjps/article/view/10705.. Acesso em: 3 may. 2024.