I mix mullein tea with juice ~50/50 for mine. Watched my 6yr old stop his constant cough in 15min. Use a coffeepaper filter otherwise it will agitate the throat
Let me know if you need some.


Healthline
What Is Mullein Tea? Benefits, Side Effects, and More
Mullein tea has long been used to treat colds, asthma, and other ailments. Learn about the possible health benefits.