Bydurean did not work for me. One new medication that I use now is invokana and my numbers are definitely improving.
The customer rep was not entirely wrong.
Fast-acting or ordinary insulin may reduce the ability of the body to produce natural insulin over time. Thus is may not be a good idea to use these insulins with exanetide.
On the other hand Lantus is a slow-release insulin. The small amounts released over time do not interfere with the natural production of insulin, which is enhanced by the exanetide.
The Journal of Cardiovascular Diabetology Jan 2015, 24, 14(1):10 establishes that under some circumstances treatment with exenetide (Bydurean) and insulin concomittantly is safe.