The combination of nirmatrelvir tablets and ritonavir tablets is a product that the FDA is allowing to be given for emergency use to treat COVID-19.
Changes in taste, diarrhea, high blood pressure, or muscle pain may occur. If any of these effects last or get worse, tell your healthcare professional promptly.
Tell your doctor right away if you have any serious side effects, including: signs of liver problems (such as nausea/vomiting that doesn’t stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine).
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
Information is limited and it is unknown at this time if nirmatrelvir and ritonavir cause other serious side effects. This is not necessarily a complete list of possible side effects.
Contact your doctor for medical advice about side effects.