More has no additional effect.
BTW, you have to build up a certain background level ~ this stuff takes a week or so to wear off such that you'd notice it, and a month before there is no more effect.
First time you use it, though, you may very well feel tingling all over your body.
Do you take it in capsule form?
I became diabetic in the course of prednisone treatment for sarcoid. Some time after I started the Marshall Protocol to cure the sarcoid, I was able to give way the glucose monitor and toss the metformin. Others have had diabetes as the primary diagnosis used the MP for a cure. www.marshallprotocol.com
Your mileage may vary, but I doubt it.