I had to take d3 longer than anyone else because of the coughing. I took 30K IU a day for a week or more. The ‘flu symptoms’ were over by the second day but the drainage had already gotten into my chest so it had to come out. I slept sitting up in a recliner and that really helped. YMMV. I ended up taking a decongestant and cough suppressant at night for a couple nights.
I finally wound up in ER yesterday. Good ol’ pneumonia. blehhh...