Definitely a myth. For example, children were playing with the freshly cut grass when, suddenly, they called for help. They were itchy all over, and they were scratching themselves like it was really in fashion. I gave them a remedy and literally, within minutes, they stopped itching and scratching and all they wanted was to have ice cream outside
Homeopathy acts fast when the condition has not been there for a long time. The body takes longer for the body to heal if the condition has been there for some time, as we are looking at a chronic health issue, not an acute.