No, Herbapect does not reduce the contraceptive efficacy of Slinda. Protection is maintained and there is no reason to worry.

You can use Herbapect and other over-the-counter cough remedies. They do not interact with oral contraception.

If the cough is wet, m.in products based on acetylcysteine, ivy, ambroxol can be effective. These preparations can be used up to 4 hours before bedtime (preferably until 5 p.m.).

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

https://www.gdziepolek.pl/produkty/64659/prospan-syrop/apteki

https://www.gdziepolek.pl/produkty/117862/ambroksol-orifarm-syrop/apteki

https://www.gdziepolek.pl/produkty/1513/acc-optima-tabletki-musujace/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

In the case of dry cough, moisturizing saline inhalations with the addition of hyaluronic acid or ectoine can be used:

for example.

https://www.gdziepolek.pl/produkty/89172/nebu-dose-hialuronic-sol-fizjologiczna-z-kwasem-hialuronowym-plyn/apteki

https://www.gdziepolek.pl/produkty/123889/ecto-respira-plyn/apteki

and moisturizing tablets, e.g. with Iceland moss, propolis, etc.

More here:

https://www.gdziepolek.pl/artykuly/kaszel-suchy-i-mokry-jak-go-leczyc

I also attach a link to a helpful post:

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

Here you can check the availability of Slinda in pharmacies and make reservations:

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