Or instead of 2 op. unavailable Accordeon 10 mg can be obtained 1 op. Accordeon 20 mg?

Unfortunately not. Such a change is beyond the competence of the pharmacist. The regulations clearly state that a pharmacist cannot dispense a higher dose than that recommended by the doctor. This is a mistake in art. In this situation, you need a new prescription for Accordeon at a dose of 20mg and a change in the dosage regimen. Legal basis - § 2 sec. 4 and 5 of the Regulation on dispensing medicines and medical devices from a pharmacy. I enclose materials that may be interesting and information about the possibility of using teleconsultation: https://www.gdziepolek.pl/telekonsultacja https://www.gdziepolek.pl/artykuly/dlaczego-brakuje-lekow-w-aptekach https://www.gdziepolek.pl/artykuly/jak-stosowac-tabletki-i-kapsulki