Til patienter, der i forvejen har fået lægemidler tilhørende samme klasse som Telzir (proteasehæmmere), bør lægen først ordinere Telzir efter at have gennemgået patientens tidligere antivirale medicin og efter at have vurderet sandsynligheden for, at medicinen virker på det pågældende virus.
In patients who have already taken medicines belonging to the same class as Telzir (protease inhibitors), doctors should prescribe Telzir only after they have looked at the antiviral medicines the patient has taken before and the likelihood that the virus will respond to the medicine.