Merck warns against Pfizer Covid-19 pill
Merck's Vice President said it might create problems for some patients taking drugs for other medical conditions
Pfizer says its Covid-19 pill is 89% effective in high risk adults
If cleared by regulators, it would likely be a game-changer in the ongoing global pandemic fight
Merck Covid pill to be available in 2022, Greek Deputy Minister of Health Gaga says
She said the monoclonal therapy would be available by the end of 2021