After having a robotic lung resection a year and a half ago, I had a persistent post surgery cough. Acupuncture finally helped resolve it. I showed the acupuncturist a tea I was drinking and she fully supported the herbal ingredients for lung health. I’m not endorsing, but it works for me- LNG-RENEW FROM primalHerb and I put a spoon of Manuka honey in it. The tea contains Mullein.