Treatment of the Common Cold with Unrefined Echinacea

A Randomized, Double-Blind, Placebo-Controlled Trial

View larger version (26K): [in a new window]   Figure 1. Randomization and patient flow.

View larger version (19K): [in a new window]   Figure 2. Illness duration. The dotted line represents the echinacea group; the solid line represents the placebo group.

View larger version (22K): [in a new window]   Figure 3. Mean severity of global and general symptoms. Dotted lines represent the echinacea group; solid lines represent the placebo group. Error bars represent 95% CIs. Although 95% CIs indicate the uncertainty of the severity of symptoms, they should not be used to compare symptom severity on any particular day.

View larger version (24K): [in a new window]   Figure 4. Mean severity of specific cold symptoms. Dotted lines represent the echinacea group; solid lines represent the placebo group. Error bars represent 95% CIs. Although 95% CIs indicate the uncertainty of the severity of symptoms, they should not be used to compare symptom severity on any particular day.