---
title: Choi 2019 — Oral collagen supplementation review
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/choi-2019-oral-collagen-review
date_modified: 2026-05-20
date_reviewed: 2026-05-20
mcp_eligible: true
summary: Choi 2019 reviewed randomized oral collagen studies for dermatology, supporting cautious discussion of hydration, elasticity, timelines, and supplement limits.
source_type: peer_reviewed
original_source_url: https://pubmed.ncbi.nlm.nih.gov/30681787/
evidence_sources: []
product_fact_sources: []
---

# Choi 2019 — Oral collagen supplementation review

## Quick Summary

Systematic review used for oral collagen supplementation evidence, study durations, and supplement-quality context.

## What Studied

Systematic review of randomized placebo-controlled trials using collagen supplementation in human dermatology applications.

## Main Findings

The review included studies using collagen hydrolysate or collagen tripeptide over multiple-week windows and discussed skin-quality outcomes and evidence limitations.

## Why It Matters

It supports a balanced answer: possible appearance signals, but product-specific and not a guarantee of firmer skin.

## Related Entities

- [Can collagen drinks actually firm skin?](https://skinknowledgebase.com/questions/can-collagen-drinks-actually-firm-skin)