Won't using Milgamma N 2 times a day for 20 days be likely to overdose?

If your doctor, who is familiar with your health situation and possible test results, has assessed that you should take Milgamma N 2 times a day for 20 days, it means that he had reasons for this. Please trust him, and in case of doubt dispel them directly in a conversation with him, e.g. by phone: https://www.gdziepolek.pl/blog/jak-telefoniczne-otrzymac-recepte-i-zwolnienie-lekarskie For my part, I can say that I do not know your state of health, so it is difficult for me to assess whether such a dose could threaten you with an overdose in your case.