NCT07379216

Efficacy Evaluation Study of Vitamin C and Glutathione Liquid Sachet

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: TCI Co., Ltd. · Industry
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

The objective of this study is to evaluate the effect of liquid vitamin C and glutathione supplements on human skin condition improvement and anti-oxidation.

Detailed description

This study is a single-center, placebo-controlled, double-blinded, parallel human trial designed to evaluate the skin beauty and anti-oxidant effect of liquid vitamin C and glutathione supplements. Healthy adult participants aged 18-65 years will be enrolled. Participants will be informed to consume test samples daily for 12 consecutive weeks. Skin measurement and self-assessment questionnaires will be conducted at baseline (before intake), after 4, 8 weeks, and 12 weeks of consumption. Fasting blood samples will be collected at baseline and after 12 weeks of consumption.

Conditions

• Skin Condition
• Anti-Oxidative Stress

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Placebo sachet	consume 1 sachet of the test samples daily for 12 consecutive weeks
DIETARY_SUPPLEMENT	Vitamin C and Glutathione Liquid Sachet	consume 1 sachet of the test samples daily for 12 consecutive weeks

Timeline

• Start date: 2026-01-24
• Primary completion: 2026-05-18
• Completion: 2026-06-01
• First posted: 2026-01-30
• Last updated: 2026-02-04

Locations

1 site across 1 country: Taiwan