Sorry about the delay, have been sick
Efficiency :10/10, you will never develop insulin lethargy
Cost :10/10
Weight loss: ?/10 i never really lost weight but I did lean out. Until I got sick.
Overall it is a great product for insulin control. I dont recommend using it every day or prior to every meal as it is very strong. I can see you never needing more than one pill due the method of action that 4-OH uses. I have yet to continue use but on occasion I get hypoglycemic still. Nothing drastically frightening though.