What Is MEDLINE?

The premier bibliographic database of the National Library of Medicine, containing over 29 million references to journal articles in the biomedical and health sciences, indexed with MeSH controlled vocabulary.

Why It Matters for Supplement Brands

MEDLINE is the curated core of PubMed. Articles indexed in MEDLINE have been vetted for inclusion and tagged with MeSH terms, making them more reliably searchable. When regulators or retailers ask for 'peer-reviewed published evidence,' they typically mean studies in MEDLINE-indexed journals.

How It Works

MEDLINE differs from PubMed in important ways:

- **MEDLINE** contains only articles from journals that have passed NLM's rigorous selection criteria - **PubMed** includes everything in MEDLINE plus additional content (preprints, author manuscripts, early publications) - MEDLINE articles are indexed with **MeSH (Medical Subject Headings)** — a controlled vocabulary that standardises how topics are categorised

For substantiation purposes, MEDLINE-indexed articles carry more weight because the journals have been vetted for scientific quality. Nutra Comp prioritises MEDLINE-indexed studies in its evidence assessments.

Common Mistakes to Avoid

  • Treating PubMed and MEDLINE as identical (MEDLINE is a subset of PubMed)
  • Not using MeSH terms to improve search precision when doing manual literature reviews
  • Citing studies from journals not indexed in MEDLINE without noting this limitation

Related Terms

Randomised Controlled Trial (RCT)Systematic ReviewPubMed

See It in Action

Explore how this concept applies to real ingredient substantiation:

Vitamin D3
127 studies · Bone Health & Calcium Metabolism
Omega-3 Fatty Acids
214 studies · Cardiovascular Health

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