FROM: Int. J. Immunotherapy 1995; 21(4): 163–166
Scaglione F, Lund B
The objective of this study was to evaluate the efficacy of an
anti-cold remedy including vitamin C (100 mg) and Echinacea
purpurea (L.) root extract in the treatment of the common cold.
study was randomized, single-blind, and placebo-controlled.
Thirty-two subjects (17 male and 15 female, age ranging between
and 71 years) were enrolled in this study. The evaluation
was the duration of the illness based on the rhinorrea and the
number of paper tissues used daily by each subject. The length of
the common cold was 3.37 days in the verum-treated patients and
4.37 days in the placebo-treated patients (p < 0.01). Also the
number of tissues used was different between the two groups (882
treated; 1168 placebo). The preparation (Cold-X) including
Echinacea was found to be useful and safe for the treatment of
common cold. Other trials under double-blind conditions would be
welcomed in order to confirm these results, and basic studies are
also necessary in order to elucidate the mechanism of action.