Ethnobotany, phytochemistry, and biological activities of Psidium guajava in the treatment of diarrhea: a review

source extracted confidence: high 2026-04-09

Ethnobotany, phytochemistry, and biological activities of Psidium guajava in the treatment of diarrhea: a review

Liu et al., 2024 | Front Pharmacol | Systematic Review

Citation

Liu Chengmei, Jullian Valérie, Chassagne François. Ethnobotany, phytochemistry, and biological activities of Psidium guajava in the treatment of diarrhea: a review. Front Pharmacol. 2024;15:1459066. doi:10.3389/fphar.2024.1459066

Abstract

Psidium guajava: is a tropical tree that is widely used in traditional medicine, especially for treating diarrhea. While P. guajava has been the subject of numerous reviews, none have specifically examined its ethnobotany, pharmacology, and phytochemistry in relation to its antidiarrheal activity. This review aims to summarize the evidence of effectiveness and safety of P. guajava in the treatment of diarrhea. Literature searches were conducted through Web of Science, PubMed, and ScienceDirect by using keywords "Psidium guajava" and "diarrhea" in October 2022. A total of 189 studies were included in this review. P. guajava is widely used in traditional medicine in 44 countries. Decoction and oral were the most represented method of preparation and administration, respectively, while leaves represented the most frequently cited part of the plant. Around 27 antidiarrheal or antibacterial compounds have been isolated and identified, including benzophenone glycosides, terpenes, polysaccharides, phenols, and flavonoids. This article presents ethnobotanical and pharmacological evidence for the efficacy of P. guajava leaves in the treatment of diarrhea and provides reference information for further investigation of this plant. However, despite the large number of publications on the topic, there are still some questions to answer: are quercetin and its glycosides the only ones to act as antidiarrheal agents? What is the mechanism of action of P. guajava antidiarrheal compounds? are the use of guava leaves safe in all types of populations including children, and at what dosage? To answer these questions, more complete phytochemical studies and systematic clinical trials are needed.

Key Findings

guajava antidiarrheal compounds? are the use of guava leaves safe in all types of populations including children, and at what dosage? To answer these questions, more complete phytochemical studies and systematic clinical trials are needed.

Outcomes Measured

  • Requires manual extraction

Population

Field Value
Population See abstract
Sample Size 189
Age Range See abstract
Condition See abstract

MeSH Terms

  • No MeSH terms indexed

Evidence Classification

  • Level: Systematic Review
  • Publication Types: Journal Article, Systematic Review
  • Vertical: quercetin

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09