I purchased 2 Timesulin caps at the end of March 2019.
1 was for my Novorapid Flexpen and 1 was for my Levemir Flexpen.
I keep the pens together so I conclude they have had the same treatment.
Before the end of July 2019, 1 of the caps failed but the other is fine.
This means it has only lasted 4 months.
What is your input please?