Merck Covid Pill Side Effects. Taking that antiviral pill against the chickenpox won't stop you from erupting into blisters all over your body, running a high fever, itching like crazy or being contagious. May affect up to 1 in 100 people.
It won't keep you from. Possible side effects of ritonavir, which is a component drug of paxlovid, include diarrhoea and nausea. May affect up to 1 in 100 people.