tommboy,
I'm not 100% sure about that. I started taking it with my cycle weeks ago and then started having this sugar crash that ended with me passsing out and having a seizure in front of my girl. I've been having problems though with sugar crashed over the past few years and have passed out from it before. but i do feel when i take letro that i'm constantly having to eat sugars/carbs to get my Blood glucose up. and yes I do poke myself to get readings. it's nothing I think everyone should worry about, just my isolated experience.