The effect ofEchinacea purpurea, Astragalus membranaceus andGlycyrrhiza glabra on CD25 expression in humans: a pilot study

Helfgott Research Institute, National College of Natural Medicine, Portland, OR 97201, USA.
Phytotherapy Research (Impact Factor: 2.4). 11/2007; 21(11):1109-12. DOI: 10.1002/ptr.2207
Source: PubMed

ABSTRACT This phase 0, double-blind, repeated within subject, randomized pilot study examined CD25 expression on T cells after ingestion of three commonly used herbs: Echinacea purpurea, Astragalus membranaceus and Glycyrrhiza glabra, administered singly and in combination. CD25 expression on T cells was significantly increased for subjects ingesting Echinacea at 24 h with notable increases in activation from Astragalus and Glycyrrhiza. CD25 expression remains elevated with daily use of Echinacea for at least 7 days.

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