e200921c_sity_of_Michigan_Health_System__Why
[Supplement] 2 Stars Throat Coat Tea (Marshmallow Root, Licorice Root, and Elm Bark) 5 to 8 ounces of tea, four to six times per day, for two to seven days [Why] 
In one study, Throat Coat tea was effective in providing rapid, temporary relief of sore throat pain in people with acute pharyngitis. In a double-blind study, a proprietary product containing marshmallow root, licorice root, and elm bark (Throat Coat) was effective in providing rapid, temporary relief of sore throat pain in people with acute pharyngitis.30 Throat Coat was taken as a tea in the amount of 5 to 8 ounces, 4 to 6 times per day, for two to seven days.
Common Cold/Sore Throat (Holistic) | University of Michigan Health System
Why