Can increased glutathione levels combat the serious side effects of COVID? NADclinic Should You Consider Using IV Vitamin Therapy to Treat Adrenal Fatigue? Burick Center for Health and Wellness Fatigue, Mitochondria and the Energy puzzle The summer before my junior year at Tufts, I became sick with long COVID. Almost immediately, I began experiencing debilitating fatigue and brain fog. My right leg would collapse in on itself