There are no remedies or drugs that have been proven to prevent or cure the coronavirus disease.
Lemons contain vitamin C which is important for overall health, but there is no scientific evidence that proves consuming lemon juice or vitamin C supplements can boost the immune system and protect humans from infections. Lemon juice either mixed with sodium bicarbonate or any other ingredients are ineffective for curing infections including the novel coronavirus. Many drugs are being tested but currently, there are no drugs that can cure COVID -19.
Also, the WHO does not recommend any form of self-medication to treat COVID-19. It has emphasized that western, traditional, or home remedies may only alleviate symptoms. Products that falsely claim to prevent or cure COVID-19 pose significant risks to public health, the WHO said.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.