Can I stop taking Sertagen after 5 days of taking half a 50mg tablet?

The sertagen withdrawal regimen should be discussed with your doctor. The dose should be reduced gradually over a period of at least one or two weeks to reduce the risk of withdrawal reactions. If withdrawal symptoms occur after dose reduction or after treatment, re-administration of the prescribed dose should be considered. It is difficult for an outsider without knowing your medical records to determine whether 5 days is enough time to stop taking the medicine. I enclose a detailed description of the preparation you are asking about: https://www.gdziepolek.pl/produkty/70699/sertagen-tabletki-powlekane/ulotka/128276