Hi, I had the flu 2 months ago. Took Tamiflu and became o.k., after a few days. Then, I started to cough, after 2 weeks of no flu. Not sure if the cough is related to the flu. Started to take NAC, 600 mg, from Pure Encapsulation, twice daily. Is this a good idea? Should I get the Effervescent type. I can t find one without splendor. Would appreciate your advice.