Be Careful!
I have had a few bouts with Hypoglycemia. Although, they were not too bad there were scary and if I was not close to sugar or have sugar (jellybeans) on hand, it might have been much worse.
Just use your head - make sure that you eat the right amount of carbs (Simple & Complex) after your shots. They few times that I had a drop were foolish mistakes on my behalf. One example was I took a shot after training and only drank a Met-Rx shake (20 or so carbs). I decided to grab a quick tan (25 min).....well just about the time I was getting out of the bed.....whaaaam! I felt dizzy, head was beading with sweat, I was stumbling....grabbed my jellybeans and started eating. I was fine after 10 min or so but it was a foolish mistake to not eat enough carbs after my shot - I thought I would be "OK" just to tan real quick - but not the case!
If you eat the right amount of carbs and gradually increase your dosages from the start, you should be fine. Just remember to start out very mild (3-5 iu's) and work your way up every 2 or 3 days. My max was 20 iu's (10 in the AM and 10 after training). I played around with 10 iu's before training with creatine and glutamine. Gives you a "freakish" pump but that's about it - no other real benefit to shooting pre-workout.....
Good Luck and Beeeee Careful!