Natural products for the management of diarrhea: a systematic review of clinical efficacy, safety, and certainty of evidence - Camila Bach; Carolina Silva Schiebel; Lara Luisa Valerio de Mello Braga; Ana Carolina Vieira Ulysséa Fernandes; Mariana Avancini; Gabriel Ferreira Fernandes; Jonatan Zaleski; Jessica Boschini D’Agostin; Daniele Maria-Ferreira (Frontiers in Pharmacology, 2026)