Is it possible to combine Nasen and Sirdalud?

I'm not sure what preparation you mean. Is it Nasen? If so, it should be used together with Sirdalud after informing the doctor about all the preparations taken. Combining Sirdaludu with Nasen may lead to an increase in the depressant effect on the central nervous system and the appearance of symptoms such as dizziness, confusion, impaired concentration and balance. I enclose materials that may be interesting and information about the possibility of using teleconsultation: https://www.gdziepolek.pl/artykuly/czy-mozna-laczyc-leki-ze-soba https://www.gdziepolek.pl/telekonsultacja With the help of Gdziepolek you can check the availability of medicines and book them at the selected pharmacy. I enclose a link to Sirdalud: https://www.gdziepolek.pl/produkty/71404/sirdalud-tabletki/apteki