My eyes are widened; especially the bit about falling asleep while driving. My goodness. I will assume then you have not again gotten behind the wheel.

I ask if there is a pattern to your sleepiness. Does it occur during regular intervals or times of the day? Is the pattern possibly connected to when you take your medication? What about activities; are their activities you can think of which are triggers to the exhaustion? These are all things to tell your doctor about - and yes I encourage you to tell them.

You owe it to yourself - and others if you are still driving - to talk to your doctor about this.