“In our experience treating over 500 patients with PCC,” said Becker, who also runs the UC Davis Health Post-COVID-19 Clinic, “The most common symptoms [of PCC] are fatigue, post-exercise exhaustion, shortness of breath, and chest pain.” Studies also show that brain fog and loss of taste or smell are also commonly seen among these patients. …However, Teitelbaum believes chronic fatigue syndrome after COVID is treatable, and research he co-authored found that a commonly available root extract could help. Previous studies have found that a unique Panax ginseng root extract called Korean red ginseng, often resulted in improvement for people living with chronic fatigue syndrome.