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Is leucine safe during pregnancy?

Reviewed by · Last reviewed

Pregnancy-Safe Ingredients Database — 28,000+ Ingredients Rated
leucine
NO KNOWN RISKS
100
/100
0

Pregnancy-safe products containing leucine

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Authoritative references used to score this ingredient.

Frequently asked questions

Is leucine safe during pregnancy?
Leucine (CAS 61-90-5) is an essential branched‑chain amino acid with no harmonised CLP reproductive classification and no evidence of reproductive or teratogenic effects in regulatory dossiers or the peer‑reviewed literature relevant to cosmetic topical use. Regulatory/databank sources (ECHA Annex VI, ECHA registration information, PubChem) do not list H360/H361 classifications or reproductive hazards; CIR/SCCS have no adverse safety conclusions for amino acids used in cosmetics.
Is leucine safe while breastfeeding?
No evidence from regulatory sources or the literature that topically applied leucine poses reproductive or lactation‑related hazards. There are no harmonised classifications or authoritative safety findings indicating risk to breastfeeding mothers or infants from cosmetic topical use (ECHA, PubChem, CosIng).
Is leucine safe for baby skin?
Hazard and mechanism remain score 0 (no reproductive/toxic mechanism identified). Exposure is scored 1 (low but measurable) for infants because skin barrier immaturity and higher surface area‑to‑weight increase exposure potential relative to adults, even though leucine is a small polar endogenous amino acid with low dermal toxicity and no regulatory flags (ECHA, PubChem, CosIng).
How does VeriMom score leucine?
VeriMom scores leucine at 100/100 (no known risks) based on EU CosIng status, ECHA hazard classifications, and peer-reviewed PubMed studies. Our scoring pipeline is fully transparent.
What are pregnancy-safe alternatives to leucine?
See our curated list of pregnancy-safe alternatives to leucine based on similar function and a no-known-risks safety band.

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Medical Disclaimer

This information is for educational purposes only and does not constitute medical advice. Safety scores are based on publicly available data and may not reflect all risks. Always consult your healthcare provider before using any product during pregnancy or breastfeeding.

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