Traditional plants with antioxidant properties in clinical trials-A systematic review

source extracted confidence: high 2026-04-09
#allium #antioxidants #curcumin #oxidative-stress #plants-medicinal

Traditional plants with antioxidant properties in clinical trials-A systematic review

Marmitt et al., 2021 | Phytother Res | Systematic Review

Citation

Marmitt Diorge Jônatas, Bitencourt Shanna, ... Goettert Márcia Inês. Traditional plants with antioxidant properties in clinical trials-A systematic review. Phytother Res. 2021-Oct;35(10):5647-5667. doi:10.1002/ptr.7202

Abstract

There is a trend toward the use of natural substances present in plants and vegetables. In general, foods rich in antioxidants are complex matrices; therefore, understanding its absorption effects is extremely relevant to know its bioactive potential. Thus, this systematic review focused on clinical trials involving plants (or compounds) registered on the National List of Medicinal Plants of Interest to the Unified Health System (RENISUS) with antioxidant properties. Following the reporting guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyzes studies of interest indexed in the PubMed and ClinicalTrials.gov databases were analyzed. Of the 59 clinical trials found, Allium sativum and Curcuma longa are the plant species with the highest percentage of clinical research. Prevention/attenuation of oxidative stress was one of the main antioxidant mechanisms indicated in the studies. The most tested compounds of the RENISUS plants in clinical trials were curcumin and soy isoflavone. In this review, we selected studies in advanced stages that highlight plants' value in optimizing antioxidant status; however, even with high-quality studies, it is not prudent to overstate the clinical efficacy of these plants.

Key Findings

In this review, we selected studies in advanced stages that highlight plants' value in optimizing antioxidant status; however, even with high-quality studies, it is not prudent to overstate the clinical efficacy of these plants.

Outcomes Measured

  • Requires manual extraction

Population

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

MeSH Terms

  • Allium
  • Antioxidants
  • Curcumin
  • Oxidative Stress
  • Plants, Medicinal

Evidence Classification

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

Provenance

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