I think he may just need some exercise. Put him on a treadmill or have him do some box squats.
There's a reason these folks ask for all the details and to have that husbandry form filled out. You asking what MBD is sounds an alarm that there may be a problem with your setup/supplementation...
Reptimom:
He's actually a blue-barred Ambilobe from Nic hah! Named him Cash after some deliberation. I have a friend that likes to call him "Bernawwwd".
My guy gets out of his cage by himself too and only started doing it this past weekend. He doesn't get any more fired up than normal, but definitely doesn't seem to want to go back in once he's out hah. He's about 4-5 months old and may just need a bigger cage.
Shelf life is determined by its manufactured date. Drug companies will tell you that Flagyl (metronidazole) is good for 2 years from the day it was manufactured. After that, it begins to lose potency.
Thanks to Nicodemayo for all the help with choosing this guy. He's a blue-barred Ambilobe. Had him for a few days now and letting him get used to his surroundings, so haven't tried to handle him yet. Still working on a name:
Cash - Matches my dog named Tango.
Leon - Like zee Professional...