Glucose tabs look like candy. But they sure don’t taste as good. That’s the point.

When you go hypo from too much insulin or sulfonylurea and too little food, you need to act quickly to bring your blood glucose level back to normal. Nothing does that better than a little glucose.

Too much glucose, on the other hand, will send your level in the other direction – too high. That’s not good either.

The solution is to take just a few glucose tabs – three or four of them depending on the...