What happens if I take Byetta 30 days after initial use of the pen?

If you take Byetta (exenatide) 30 days after the initial use of the pen, it may not be as effective as it should be. Byetta is a once-weekly injectable medication used to treat type 2 diabetes. The pen is designed to be used once a week, and the medication is released over the course of the week. Taking it after 30 days could make it ineffective. If you miss a dose of Byetta, you should not take an extra dose. Instead, you should wait until your next scheduled dose and then resume your regular dosing schedule. If you have any questions or concerns about taking Byetta, you should talk to your doctor.