I don't know if I had COVID-19 since I couldn't get a test. I had dry cough for 4 weeks since early May. It didn't go away.
I increased Vitamine D supply by taking a supplement and eating more fish (salmon, herring). The cough became better but became much better only when I also added Echinacea.
I increased Vitamine D supply by taking a supplement and eating more fish (salmon, herring). The cough became better but became much better only when I also added Echinacea.