Is the drug Anvildis can reduce the contraceptive effect of Vibin Mini ?

There is no information in the available sources that the effectiveness of Vibin Mini is reduced in this drug combination.

Interaction occurs here on a different level. The ethinylestradiol in Vibin Mini may cause your blood glucose to rise. Therefore, your current dose of vildagliptin (Anvildis) will not be effective enough. If the medicines have been prescribed by different doctors, it is advisable to consult them to determine whether the medicines can be used at the same time and, if so, whether the dosage needs to be changed.

Here you can check the availability of the drug with the possibility of reserving it at the pharmacy: 

https://www.gdziepolek.pl/produkty/118740/anvildis-tabletki/apteki

https://www.gdziepolek.pl/produkty/82281/vibin-mini-tabletki-powlekane/apteki

I am sending you materials that may be helpful:

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