Yes, you can take these preparations at the same time, but it is worth keeping appropriate time intervals.

Euthyrox is best taken in the morning on an empty stomach, at least 30 minutes before meals and other medications. Tardyferon-Fol and vitamin C should be used together, but preferably a few hours after Euthyrox, so as not to interfere with its absorption. Structum and Devikap can be taken at different times of the day.

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

https://www.gdziepolek.pl/telekonsultacja

Through Gdziepolek, it is possible to book medicines in a selected pharmacy in Polish:

https://www.gdziepolek.pl/produkty/102253/devikap-kapsulki/apteki

https://www.gdziepolek.pl/produkty/28214/euthyrox-n-75-tabletki/apteki

https://www.gdziepolek.pl/produkty/75099/structum-kapsulki/apteki

https://www.gdziepolek.pl/produkty/77437/tardyferon-fol-tabletki-o-zmodyfikowanym-uwalnianiu/apteki

https://www.gdziepolek.pl/produkty/83243/vitaminum-c-teva-200-mg-tabletki-powlekane/apteki