The use of soda bicarbonate, also known as baking soda, is an example of one of these unproven home remedies. Baking soda is used for some medicinal treatments but has not been proven to be a cure for COVID-19. Using baking soda also does not prevent COVID-19.  

A non-randomized clinical study on baking soda for treatment of mild COVID-19 was carried out by a university in Egypt. The researchers studied a small group of patients with mild COVID-18 pneumonia and concluded that baking soda could be used as adjuvant therapy (a therapy that is given in addition to the main therapy) in the case of mild conditions, but clinical, randomized trials were needed to confirm this finding and effectiveness. So far no other clinical study has found baking soda to be a preventative or treatment for COVID-19.

The authorized and approved vaccines against COVID-19 are the only recommended way to prevent COVID-19 infection. Current data suggests that no home remedy can replace or compare with the benefits of getting vaccinated against COVID-19.

Because COVID-19 is still a new disease, scientists are still trying to understand the virus, which includes trying to find ways to prevent and treat the virus. In this rapidly changing environment, individuals are also trying to find ways to prevent or treat the virus, especially as cases increase during Omicron.

As a result, many people are suggesting various home remedies for the prevention and treatment of COVID-19. However, these methods have not been scientifically proven to show any results. While the use of certain home remedies could provide temporary relief or make one feel better, no home remedies have been shown to be able to prevent or cure COVID-19 infection. 

Use of baking soda (like with hot water or for gargling) to prevent or treat COVID-19 is one of the many false claims that have been made about COVID-19 home treatments or cures. This is a false claim that is not backed by any clinical trials so far.