I wasn't on Glucovance per se, but I was on Glucophage and Glucotrol, which is essentially the same thing. Yes, I did sometimes get readings in the low 60's, even got into the 50's once or twice, but I never 'felt' it. If I hadn't measured I'd've never known it was that low. I'm now only on Glucophage XR, but 2000 mg. I did NOT like the sulfonylurea! I couldn't lose weight on it. I don't think BGL that low is a problem (still in the 'normal' range) unless it adversely affects you.