ScholarLens Back to search
1998•Pharmaceutical BiologyOpen access

Note Variations in Hypericin Concentrations in Hypericum perforatum L. and Commercial Products

G.H. Constantine, Joseph J. Karchesy

Open full text 39 citations

Abstract

Twelve samples of Hypericum perforatum L. (St. John’s wort) were collected throughout Oregon and assayed for hypericin concentrations which ranged from 0.03 to 0.38%. Eight commercially available dietary supplements were also assayed using the same methods and the hypericin concentrations varied from 47 to 165% of their labeled concentrations.

Open-access reader

About this research paper

What this paper is about

Twelve samples of Hypericum perforatum L. (St. John’s wort) were collected throughout Oregon and assayed for hypericin concentrations which ranged from 0.03 to 0.38%. Eight commercially available dietary supplements were also assayed using the same methods and the hypericin concentrations varied from 47 to 165% of their labeled concentrations.

Why it matters

OpenAlex reports 39 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Twelve samples of Hypericum perforatum L. (St. John’s wort) were collected throughout Oregon and assayed for hypericin concentrations which ranged from 0.03 to 0.38%. Eight commercially available dietary supplements were also assayed using the same methods and the hypericin concentrations varied from 47 to 165% of their labeled concentrations.

Key concepts: Hypericin, Hypericum perforatum, Hypericum, Hyperforin, Pharmacognosy, Traditional medicine, Chemistry, Pharmacology

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Note Variations in Hypericin Concentrations in Hypericum perforatum L. and Commercial Products — Research Paper | ScholarLens