The following from
https://www.diabetes.co.uk/forum/threads/victoza-temperature.133208/#post-1678808
Storing unopened injection pens: Store in the refrigerator.
Do not freeze Victoza, and throw away the medication if it has become frozen. Do not use an unopened injection pen if the expiration date on the label has passed.
Storing after your first use: You may keep "in-use" injection pens in the refrigerator or at room temperature. Protect the pens from moisture, heat, and sunlight. Use within 30 days. Remove the needle before storing an injection pen, and keep the cap on the pen when not in use.