THREONINE
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An essential amino acid, one of the building blocks the body uses to make protein, obtained through diet or produced industrially through fermentation for supplement use.
Why it’s used
Taken by some as a general amino-acid supplement, sometimes included in protein or immune-support blends.
What the evidence says
There is no NIH ODS fact sheet specific to threonine. Most human research concerns overall dietary protein and amino acid requirements rather than isolated supplementation, and no established benefit from supplementing beyond typical dietary intake has been demonstrated.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 27 records · searched August 2026
"THREONINE"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 52456 records · searched August 2026
"THREONINE"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Research on threonine largely comes from total protein and amino acid nutrition studies rather than trials of standalone threonine supplementation.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.