Yes, you can. There are no contraindications to the simultaneous use of the drugs mentioned in the question.

Please remember that you should always report all medications and dietary supplements to your doctor, especially when he or she decides to take more medications. Such a procedure will allow for the selection of safe and effective pharmacotherapy.

You can check the availability of Seronil through GdziePoLek.pl and book it at the pharmacy of your choice and pick it up with your prescription:
https://www.gdziepolek.pl/produkty/70687/seronil-tabletki-powlekane/apteki

The GdziePoLek.pl service also allows you to compare the prices of Aviomarin and order it with home delivery or collection at the nearest stationary pharmacy: https://www.gdziepolek.pl/produkty/8296/aviomarin-tabletki/apteki

In cities such as Warsaw, Wrocław, Łódź, Bialystok, Lublin or Krakow, products can be ordered with instant delivery even in 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

I've included additional information that you may find helpful: https://www.gdziepolek.pl/artykuly/10-najczestszych-bledow-w-przyjmowaniu-lekow

https://www.gdziepolek.pl/artykuly/czy-przyjmowanie-kilku-lekow-jednoczesnie-jest-bezpieczne

https://www.gdziepolek.pl/artykuly/czy-mozna-laczyc-leki-ze-soba