Good morning.
I arrive one day with glycemia a little high in some points of the day.I have realized that the boli with which sometimes clicks me, that I had it next to the new one, it is one open 1 and a month ago or so.Is it true that after 28 days do you lose effectiveness?If it is well preserved at room temperature to what extent will it lose insulin?Should I throw it and continue with the new one?I am sorry to discard insulin that apparent me is fine.I am a little complimated and I don't know if that's why or for the ball that has 28 days after.Greetings and thanks.