Powerfull for lungs disease, cough : Verbascum thapsus (grand mollein) and very common everywhere (at least EU and US)
Also, Synthesis / Natural source :
-HCQ / Quinine (Cinchona tree bark)
-Ivermectine / Anthelmintic effectArtemisia annua (sweet wormwood)
This last one is close parent of artemisia absinthium (grand wormwood)
Now please me by answering this :
When was grand wormwood declared unanimously dangerous?
And how convenient would that be re: Spanish Flu pandemic ?
(HCQ - Wormwood ban. History repeating)