I am a light smoker for more than 10 years. My throat is often uncomfortable and cough drops are not helping. I did a research and WOWED by the benefits of the tiger milk mushroom especially in the immunity. After taking Lignosus, one thing I obviously feel is I have less mucus when my throat is uncomfortable. This relieves me a lot. For other improvements I am afraid I can’t tell yet. But definitely, I will buy again!