First, they never say if you should continue with your regular meds or not. You probably need to consult with your doctor who will not approve anyway.
Second, there is no info on their "invoice" on how or where to return. I returned my unopened package and now find out I did not get a RMA so they may not accept it.
I took it for nearly 2 weeks, didn't notice any drop in my blood sugar. My stomach seemed upset and I had diarrhea. I also felt like I was in a fog all the time, couldn't seem to concentrate.
Bottom Line: No, I would not recommend this to a friend