If you take tablets which belong to the sulphonylurea or glinide families there are strict rules which were introduced in March 2016. These require you to do a finger prick blood test “at least twice a day and at times relevant to driving, i.e. within two hours of starting to drive and then every two hours whilst driving”. Also, you need to keep fast acting carbohydrate, such as glucose tablets, within easy reach when driving. You also need to have a “clear understanding of diabetes and the necessary precautions for safe driving”.
Common medications within this group are gliclazide, glimepiride, and tablets ending in …glinide, although there are several others.
Other treatments for diabetes, such as metformin, don’t have such strict requirements and don’t require regular finger prick testing.