Try Neal's Yard Echinacea Spray on the tongue. It has echinacea, elderberry and honey. Cured two people in my family in less than 12 hours. Costs about £8.
Doctors tell you to go home and take an asparin, and drink hot toddys, while you sit under their posters that say penicillian does nothing for colds and sore throats so go home and take an asparin and drink hot toddys.