Efficacy of an extract of North American ginseng containing poly-furanosyl-pyranosyl-saccharides for preventing upper respiratory tract infections: a randomized controlled trial
Predy GN, Goel V, Lovlin R, Donner A, Stitt L, Basu TK
Published in CMAJ
Key Findings
Over 4 months of cold season, the ginseng group reported fewer recurrent colds and shorter symptom duration than placebo.
Conclusions
North American ginseng extract modestly reduced the frequency and duration of colds in healthy adults.
Limitations
Self-reported outcomes; single proprietary extract; manufacturer involvement.
Supplements Studied
Efficacy of an extract of North American ginseng containing poly-furanosyl-pyranosyl-saccharides for preventing upper respiratory tract infections.
Outcomes Measured
Ginseng-treated participants reported fewer recurrent colds and shorter symptom duration than placebo.
Study Details
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