Why did the pressure after Captopril increase?

There can be many reasons. Most often it is a measurement error, too low dose of the drug or stress or increased physical effort just before the measurement. If the drug does not work properly and the pressure values are still high, it is worth consulting a doctor to modify the method of treatment. If you do not have the opportunity to consult your doctor, you can use teleadvice here: https://www.gdziepolek.pl/telekonsultacja You may want to consider buying a suitable blood pressure monitor. I attach links to websites where you will compare the prices of popular blood pressure monitors in online pharmacies and order your device with home delivery or collection at the pharmacy, e.g. https://www.gdziepolek.pl/produkty/57042/cisnieniomierz-omron-m2-cisnieniomierz/apteki https://www.gdziepolek.pl/produkty/100373/cisnieniomierz-novama-comfort-af-cisnieniomierz/apteki I also attach a link to our analysis of blood pressure monitors, where we suggest what to follow when buying the best blood pressure monitor: https://www.gdziepolek.pl/artykuly/jaki-cisnieniomierz-wybrac