I’m a big believer in Mullein Leaf Tea. I attribute it to saving my life in 2019. I couldn’t cough the phlegm out of my lungs to save me. The Tea worked. Think about it as far as a very thick cough syrup compared to a more liquid medium. It grows wild here in Ohio.
https://health.clevelandclinic.org/mullein-benefits
https://www.hawthorncenter.com/for-lung-health-get-to-know-mullein/
Another interesting article about it’s history.
https://www.motherearthliving.com/gardening/plant-profile/herb-to-know-mullein-verbascum-thapsus/