https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509173/
Anti-infective Properties of the Golden Spice Curcumin
Turmeric (Curcuma longa L.) belongs to the family of ginger (Zingiberaceae) and natively grows in India and Southeast Asia. The plants rhizomes contain several secondary metabolites including curcuminoids, sesquiterpenes, and steroids (Omosa et al., 2017); with the curcuminoid curcumin being the principal component of the yellow pigment and the major bioactive substance.
Antiviral Activities of Curcumin
Due to the lack of preventive and therapeutic options for many viral infections, numerous studies have been conducted to investigate the antiviral potential of natural compounds. Accordingly, antiviral effects haven been shown, e.g., for components of green tea (as reviewed, e.g., Steinmann et al., 2013), cinnamon (Connell et al., 2016) and many herbs. For curcumin, an antiviral activity was observed against several different viruses including hepatitis viruses, influenza viruses and emerging arboviruses like the Zika virus (ZIKV) or chikungunya virus (CHIKV). Interestingly, it has also been reported that the molecule inhibits human immunodeficiency virus (HIV), herpes simplex virus 2 (HSV-2) and human papillomavirus (HPV), indicating that curcumin reduces the spread of sexually transmitted diseases. In this section and in Table 1 we will summarize the current understanding of the antiviral aspects of curcumin and possible mechanisms underlying its inhibitory effects.
(Youtube is banning the mention of turmeric and vitamin c as treatment for covid 19)