Botanical species · safety record

Taxus brevifolia

The EFSA Compendium of Botanicals holds 7 constituent measurements for Taxus brevifolia. This page reports what those source records contain and how to reach them. It carries no effect estimate, no dose and no recommendation.

Accepted name in source: Taxus brevifolia Nutt.

7Constituent measurements

0Safety records

1Cited sources

0Licensed products (Canada)

Regulatory presence

No Health Canada licensed natural health product in the snapshot names this species as a medicinal ingredient under this exact binomial. Absence here means absence from this one register under this one name, not absence from trade, and not a safety verdict.

What the records describe

Constituents measured

Plant parts

Preparations

Recorded constituents

What analytical work has found in this species, at which plant part and preparation. A measured constituent is a fact about material, not about effect.

Substance	Plant part	Preparation	Concentration	Analytical method	Source
Cephalomannine	Bark	Solvent extraction	≥ 0.006 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Cephalomannine	Bark	Solvent extraction	≤ 0.012 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Cephalomannine	Leaves	Solvent extraction	0.005 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Taxol	Bark	Solvent extraction	≥ 0.042 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Taxol	Bark	Solvent extraction	≤ 0.076 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Taxol	Leaves	Solvent extraction	≥ 0.011 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI
Taxol	Leaves	Solvent extraction	≤ 0.016 Percent	High Performance Liquid Chromatography (HPLC)/Liquid Chromatography (LC)	Resolve DOI

Cited sources

The literature the compendium cites for this species. Metatron Health has no relationship with these authors or journals and earns nothing from citing them.

Kelsey, R.G., Vance, N.C. Taxol and cephalomannine concentrations in the foliage and bark of shade-grown and sun-exposed taxus brevifolia trees. Journal of natural products, 1992, vol. 55, no. 7, p. 912-917. DOI

Boundary

A constituent measurement is a fact about material at a stated preparation, not a statement about what that material does in a person. An adverse-effect or genotoxicity record is an observation reported in a source, most often in an animal or laboratory model. Neither is a Metatron Health conclusion about causality, human risk or benefit, and the absence of a record is not proof that a preparation is safe. Nothing here is diagnosis, prescribing or individual medical care.

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Independent literature