Berlin, Germany—A branded larch arabinogalactan (ResistAid, from Lonza, Inc., with U.S. headquarters in Allendale, NJ) may prevent colds thanks to its “immune-stimulatory properties.” Such were the findings in a study published by German researchers in Current Medical Research and Opinion.

The three-month, placebo-controlled trial involved 199 people who had about three colds in the past six months. Some 4.5 grams of larch arabinogalactan was given to 101 individuals, and a placebo was given to 98 people. All participants documented any colds contracted during the study and rated their symptoms on a four-point scale. The colds were diagnosed by a doctor.

In the end, larch arabinogalactan decreased the incidence of colds far more (23% reduction) than a placebo. In addition more people remained symptom free with the extract than with the placebo. The authors state, however, that additional research is needed before we can fully understand the mechanism of action.

Published in WholeFoods Magazine, March 2013