What are the missed-dose instructions for Vosevi 400 mg/100 mg/100 mg film-coated tablets?

For Vosevi 400 mg/100 mg/100 mg, take a missed tablet as soon as possible with food if within 18 hours of the usual time, then take the next dose as usual; after 18 hours, skip the missed dose and resume at the usual time, without doubling.