Well, that's a tough one. Hypoglycemia - low blood sugar - happens when there is not enough glucose in the body causing brain fog, mental weakness, and fatigue, hunger AND nausea. I do know this - certain types of parasites LOVE sugar. Parasites that love sugar could be using the glucose that your brain needs to function properly. Symptoms of low blood sugar are also symptoms of parasite infections. I don't have ANY supporting numbers for this one - but I can just about say for sure that EVERYONE needs to do a parasite cleanse at least twice per year. I don't see where it could make things worse - and who knows - it might just level out that blood sugar. I do know it helps with hypergylcemia - high blood sugar.
Fennel is the only herb that I know of that will by itself raise that glucose level. I wish I could be of more help on this one - more certain of what is correct.