Yes, Dentinox N or Sachol do not interact with oral contraception, including Slinda pills. You can use these preparations and still the protection will be maintained.

Here you can compare the prices of these products in online pharmacies and place your order with home delivery or pharmacy pickup:

https://www.gdziepolek.pl/produkty/21818/dentinox-n-zel/apteki

https://www.gdziepolek.pl/produkty/68481/sachol-zel/apteki

In cities such as Warsaw, Wrocław, Katowice, Kraków, Lublin, Gdańsk, Łódź, Szczecin, Białystok, Poznań and Chorzów, products can be ordered with instant delivery in as little as 1 hour thanks to the Wolt Drive service.

- check if the service is available in your location:
https://www.gdziepolek.pl/koszyk/szybka-dostawa?src=zf

Here you can check the availability of Slinda and make a reservation at the pharmacy:

https://www.gdziepolek.pl/produkty/101505/slinda-tabletki-powlekane/apteki

I've attached links to helpful entries:

https://www.gdziepolek.pl/artykuly/jakie-leki-oslabiaja-skutecznosc-antykoncepcji

https://www.gdziepolek.pl/artykuly/zmiany-w-jamie-ustnej