Yes, there is evidence that Echinacea can have a direct action on HSV-1, the cause of cold sores.
However, we find that Propolis is probably a better agent against this virus, particularly a special extract known as PPE found in some lip care ointments.
Please let me know if I can be of further help.
Do you have questions? Please feel free to ask.
Stay up to date with the latest pollen information by finding your local pollen forecast from over 30,000 locations across the UK.