There is evidence from blinded, placebo-controlled studies that elderberry can modestly shorten the duration of colds and flu. Since there is no cure for the common cold, elderberry might be worth a try; but more research is needed. The common cold is usually a minor illness that is self-limiting. It… read more "Elderberry Elixir for the Common Cold"
A study of On Guard, a mixture of essential oils, showed that it reduced the infectivity of influenza virus in dog kidney cells in the lab; but that’s irrelevant to the question of whether the product has any clinical effect in humans. Essential oils smell good, but the claims of… read more "On Guard, DōTERRA, Essential Oils, and a Lesson in Reading Research Studies"