Table 1.

Studies which focus on gut microbiome and probiotics in COVID-19.

S.No	Study Title	Article Type	Refs.
1	Targeting the gut–lung microbiota axis by means of a high-fibre diet and probiotics may have anti-inflammatory effects in COVID-19 infection	Review	[157]
2	Microbiota Modulating Nutritional Approaches to Countering the Effects of Viral Respiratory Infections Including SARS-CoV-2 through Promoting Metabolic and Immune Fitness with Probiotics and Plant Bioactives	Review	[158]
3	Traditional Chinese medicine for COVID-19 treatment	Review	[159]
4	Gut microbiota and Covid-19- possible link and implications	Review	[160]
5	Probiotics and COVID-19 : one size does not fit all	Review	[161]
6	Potential Effects Immunomodulators on Probiotics in COVID-19 Preventing Infection in the Future. A Narrative Review	Review	[162]
7	The small intestine, an underestimated site of SARS-CoV-2 infection: from Red Queen effect to probiotics	Review	[60]
8	Considering the Effects of Microbiome and Diet on SARS-CoV-2 Infection: Nanotechnology Roles	Review	[163]
9	Antiviral effects of probiotic metabolites on COVID-19	Express Communication	[164]
10	Using Probiotics to Flatten the Curve of Coronavirus Disease COVID-2019 Pandemic	Review	[165]
11	Nutrition Therapy in Critically Ill Patients With Coronavirus Disease 2019	Review	[166]
12	Approach to Nutrition in Cancer Patients in the Context of the Coronavirus Disease 2019 (COVID-19) Pandemic: Perspectives	Review	[167]
13	Diet Supplementation, Probiotics, and Nutraceuticals in SARS-CoV-2 Infection: A Scoping Review	Review	[168]
14	Dietary recommendations during the COVID-19 pandemic	Review	[169]
15	Can Probiotics and Diet Promote Beneficial Immune Modulation and Purine Control in Coronavirus Infection?	Review	[170]
16	Should Probiotics, honey, and escin be used in the prevention or treatment of COVID-19?	Review	[171]