A Victoza pen will last up to 30 days in the refrigerator and also out of the refrigerator once you begin to use the Victoza Pen.
Yes your victoza pen needs to stay refrigerated as long as it's unopened and unused.
Once you open the Victoza Pen and use the Victoza pen then you can leave it out for up to 30 days at room temperature.
However it's best to keep the Victoza Pen refrigerated to make it last longer and keep it as effective as possible.
Never freeze the Victoza Pen as it can ruin the Victoza and if it has been frozen you should not use the Victoza pen and throw it out.
But you do not have to keep the Victoza refrigerated if you're using it but always keep the Victoza Pen refrigerated if you haven't used it yet.