These drugs do not interact with each other in clinically relevant ways. They can be combined with each other.

According to the manufacturer of Duomox:

Caution should be exercised during dosing and liver function should be monitored regularly. Increases in liver enzymes and changes in blood counts were observed.

Here you can check the availability of Duomox in pharmacies and make a reservation:

https://www.gdziepolek.pl/produkty/25590/duomox-tabletki/apteki?pvid=12691

I attach links to helpful wspisów:

https://www.gdziepolek.pl/artykuly/co-szkodzi-watrobie

https://www.gdziepolek.pl/artykuly/fakty-i-mity-o-antybiotykach