Are Nutraceuticals Effective in Covid-19 and Post-Covid Prevention and Treatment?

The document reviews the potential role of nutraceuticals, including vitamins C, D, and E, zinc, melatonin, probiotics, flavonoids, and curcumin, in the prevention and treatment of COVID-19 and post-COVID syndrome. These compounds are known for their immune-boosting, antiviral, antioxidant, and anti-inflammatory activities. A randomized controlled trial showed that daily supplementation of 500 mg vitamin C for 2 weeks significantly improved the survival of COVID-19 patients. Vitamin D deficiency is linked to a higher COVID-19 mortality risk, and supplementation can improve prognosis, especially in high-risk older patients. Other nutraceuticals like zinc, melatonin, and flavonoids also show potential benefits. However, the document concludes that further research is needed to confirm these findings and establish appropriate dosages and intervention times.