Is it possible to use drugs at the same time: Dymista, Rupurix and Apselan?

Yes, you can. These drugs do not interact with each other clinically that would preclude their combined use. Usually, in the treatment of inflammation of the eustachian tube, drugs are implemented: anti-inflammatory (here: Dymista), vasoconstrictor (here: Apselan), antihistamine (here: Rupurix). The actions of these drugs complement each other, allowing for better treatment results. In case of doubt, I encourage you to consult your doctor again. It is the doctor who decides whether to treat the patient m.in based on the history of the disease and the previous response to treatment. Only a doctor can decide on a possible change in pharmacotherapy. If you are unable to get to your doctor, the gdziepolek.pl Service also allows you to obtain a teleconsultation with a doctor: https://www.gdziepolek.pl/telekonsultacja