Is it possible to combine the drugs Ketrel, Elicea, Piramil and Nedal?

Ketrel in combination with Nedal and Piramil may cause an additional decrease in blood pressure, which may result, for example, in headaches and dizziness, especially when changing the position from lying down to standing. The drugs Ketrel, Elicea, Piramil and Nedal can therefore only be taken together if they have been prescribed by one doctor, or if the prescribers of these preparations have been informed of what other medicines the patient is already taking, what additional conditions he suffers from and only in such a combination (order) as follows from these recommendations. If medicines have been prescribed by different doctors, it is necessary to consult them to determine whether these medicines can be used simultaneously. If so, your doctor may make other recommendations on how to use them. In the event that the drugs have been prescribed by one doctor, please follow the dosage regimen. I am attaching a study that may be helpful: https://www.gdziepolek.pl/app/artykuly/czy-przyjmowanie-kilku-lekow-jednoczesnie-jest-bezpieczne