Agree with cwal, sounds viral. I had covid in February and had a horrible sore throat and headache. Keep it up! I noticed improvement after just 1 month and now 2 months in, I am truly amazed and thrilled at the results. In talking with the Panther RX pharmacist, I learned many people see an improvement in the 2–3-month time frame. I was ahead of that curve, and some don't see major improvement for 6 months (per scoop). The pharmacist also told me that the most common side effect they are seeing is dry skin. My chronic cough is virtually gone, my energy level has improved 80-90% (also taking SOL Nutrition GOGO supplements for energy), and I am producing minimal mucus. The most interesting change is: pre Brinsupri, when I nebulized I coughed a lot and went through a lot of Kleenex, mostly saliva and upper airways gunk. Now, I nebulize and produce very little (if any) mucus and on some days about 3 hours later, I can feel mucus moving into the center of my chest and up and out without even coughing. I am interpreting this as clearing from deeper inside my lungs and cilia that may have been immobilized due to inflammation are starting to work again. This is happening less frequently now, but I believe I have been clearing old, impacted mucus. If inflammation is primarily caused by the neutrophils, Brinsupri should work very well. I do have mild eosinophilic asthma but it's very mild and so have not had any of those episodes in over 2 months.