I've used the yohimbe supplement many times in the past 5 mg and it's intense to me as it is... i was recently diagnosed with type 2 diabetes due to chronic pancreatitis...
I took it for the first time since diagnosed today... and it doesn't seem to be messing with my blood sugar numbers... it does make me sweat and have chills because of how it messes with body temperature for thermogenics they "say" helps burn fat... now idk if that works i never got skinny off it... but, to me, it gives me a lot of energy but almost immediately I get the jitters at first... after taking it for a week or two it gets less intense...
I hope this helps!