An allergic reaction as such does not affect the effectiveness of birth control pills. However, if the reaction was severe enough to require treatment, such as antihistamines, steroids, or gastrointestinal malabsorption (e.g., diarrhoea, vomiting), this could potentially reduce their effectiveness. It is worth consulting with a doctor to assess whether additional precautions are necessary.

If you need more personalized advice, you can use teleconsultations here:

https://www.gdziepolek.pl/telekonsultacja/z-ginekologiem

The availability of Vibin Mini in pharmacies in Polish can be checked at the following address:

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