Phytochemical Profile and Acute Toxicity in CD-1 Mice of the Hydroethanolic Extract and Butanolic Fraction of Piper marginatum Jacq.

This study evaluated the acute toxicity of the hydroethanolic extract and the butanolic fraction of <i>Piper marginatum</i> Jacq., following the OECD Guideline 423. Oral and intraperitoneal exposure of CD-1 mice was used in single-dose and repeated-dose schedules. No mortality or significant behavioral alterations were observed. Body weight remained stable during treatment, and histopathological analysis revealed only mild to moderate alterations, mainly in the liver, kidneys, and lungs. These results indicate the absence of acute systemic toxicity under the conditions evaluated. Preliminary phytochemical analysis and metabolomic profile analysis by LC-QTOF/MS revealed a diverse composition of secondary metabolites, including alkaloids, flavonoids, phenylpropanoids, and sphingolipids. Compounds with known biological activity and some with potential toxicity were identified. The findings support the safe use of <i>Piper marginatum</i> extracts in short-term applications and suggest further subchronic toxicity studies and mechanistic evaluation. This research provides fundamental data for preclinical characterization and standardization of extracts of plant origin.