Sumamed can be taken 24 hours after the last dose of ivabradine, as directed by your doctor. Sumamed (azithromycin) and ivabradine may have potential interactions, so your doctor recommended replacing ivabradine with the beta-blocker Nebilet when taking Sumamed, which is a prophylactic action.

Since you took your last dose of Iwabradine at 1:30 a.m., Sumamed can be safely started after the daily interval, i.e. at the earliest around 1:30 a.m. the next day, as Iwabradine has an action time of about 24 hours. In practice, however, it is recommended to follow the doctor's recommendations for changing medication and consult in case of any doubts.

If you need more personalized advice, you can use the teleconsultation here:

https://www.gdziepolek.pl/telekonsultacja

Thanks to the Gdziepolek.pl service, you can book medicines in a selected pharmacy in Polish:

https://www.gdziepolek.pl/produkty/89712/ivabradine-anpharm-tabletki-powlekane/apteki

https://www.gdziepolek.pl/produkty/52524/nebilet-tabletki/apteki

https://www.gdziepolek.pl/produkty/75418/sumamed-tabletki-powlekane/apteki

I attach additional information that may be 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