The drug may cause arrhythmia.
According to the manufacturer:

"Post-marketing reports of QT prolongation and ventricular arrhythmias, including Torsade de Pointes disorders, predominantly in female patients, in patients with hypokalaemia, and in patients with QT prolongation or other cardiac disease."

This symptom may not go away with the duration of treatment, so you should consult your doctor. You may need to change the dosage or change your therapy.

Side effects observed should be reported to the doctor, who will decide on further treatment. We write about why adverse drug reactions should be reported here:

https://www.gdziepolek.pl/artykuly/jak-i-dlaczego-zglaszac-dzialania-niepozadane

If you are unable to consult your doctor, you can use the teleconsultation here:

https://www.gdziepolek.pl/telekonsultacja