The combination of Primovir tablets is a product approved by the FDA for emergency use in the treatment of viral infection. It is prescribed to people who have recently tested positive for viral infection, have had mild to moderate symptoms for less than 5 days, and have not been hospitalised. You must also be at high risk for viral infection complications due to advanced age, obesity, or ongoing medical conditions in order to receive this product. Consult your doctor about the risks and benefits of Primovir treatment. It works by preventing the virus that causes viral infections from growing. Nirmatrelvir levels are raised by ritonavir.