Can halving the dose of Pragioli cause dizziness, chest burning and visual disturbances?

Yes, the effect of reducing the dose of Pragioli may be the symptoms you mentioned. It is difficult to determine how long they can last. The frequency and severity of these symptoms depends on the dose of the drug, as well as the duration of use. In the case of pregabalin (the active ingredient of Pragioli), this is usually a period of several weeks. If the symptoms are very bothersome or worsen, I recommend that you contact your doctor. I attach a leaflet to the medicine: https://www.gdziepolek.pl/produkty/89742/pragiola-kapsulki/ulotka/ I also attach a link to an article that may interest you: https://www.gdziepolek.pl/artykuly/czy-jak-i-kiedy-mozna-odstawic-leki