Stimulants

Anyone got any advice/ experience of using herbal or pharmecutical stimulants to stay awake with diabetes? I have looked into this and found a few rememdies. I am about to try Guarana and then other stuff like diet pills. Coffee is just not strong enough to deal with diabeteic tiredness especially with DAFNE where bg's seems to be higher than on normal MDI. Just not getting used to the higher levels so need to do something about it until I get my doses sorted. Any advice welcome.

thanks