It's best to drink in the evening -- and be prepared to go straight to bed after drinking it! Keep yourself as warm as possible, even if being under the covers makes you uncomfortable.
The idea is that you will begin sweating and the toxins that have caused you to become sick will begin to leave your body. This tea makes you very tired, but often you will wake up feeling good as new!
Flu Tea https://traditionalcookingschool.com/food-preparation/recipes/a-peek-into-our-medicine-cabinet-fighting-illness-with-food/