You should take medicine if you cough up white phlegm after COVID-19.
According to medical knowledge, coughing up white phlegm after COVID-19 generally requires medication. Coughing continuously after COVID-19 will worsen the condition. Patients need to take medication. They can take Tongxuanlifei Pills, Xuanfei Baidu Granules under the guidance of a doctor. Patchouli is composed of ephedra, which can purge the lungs and detoxify. It has the functions of removing dampness and eliminating phlegm. It has a great effect on coughs caused by colds, expectoration and lung-heat discomfort. You should pay more attention to rest and drink more boiled water.