Does a 4-hour delay in taking a Slinda tablet affect its effectiveness?

Protection may be reduced. You should use an additional form of contraception in the form of a condom for a further 7 days. According to the manufacturer: "If the intake of any white active pill is delayed for more than 24 hours, the contraceptive effectiveness may be reduced. In this case, consider using a mechanical contraceptive method, e.g. a condom, for the next 7 days. You should take the missed tablet as soon as you remember, even if it means taking two tablets at the same time. The next tablets should be taken at the usual time." More here: https://www.gdziepolek.pl/opinie-i-pytania/25293/czy-opoznienie-o-dwie-godziny-w-przyjeciu-tabletki-slinda-w-14-dniu-obniza-jej-skutecznosc