While we are not permitted to give out any information that may be taken as medical advice, I can tell you that I personally take turkey tail in the form of PSP/Coriolus Versicolor. Turkey tail is the generic form. There are many favorable studies, but one must check with their doctor to make sure it doesn't interfere with any treatment. I started taking it, along with other botanicals, 23 years ago when I finished my chemo treatments so I do not have to worry about any contraindications. If you go to pubmed.org and put int the search terms "lung cancer" + "coriolus versicolor" you shoud find some encouraging abstracts. Wishing you all the best, Alisa, Lung Cancer Team Patient Leader