The most important of them are MAP kinases, receptor tyrosine kinases, non-receptor tyrosine kinases. As ACE2 is located in several tissues of our body, therefore, Covid-19 also causes several other problems other than the infections of the respiratory tract. These include neurological and gastrointestinal diseases, kidney and hepatic injuries and other complications. Therefore, RAS or Ang II receptor blocking treatments are required for effective solution to Covid-19 (El-Arif et al.,