ALA vs METFORMIN

I was hoping that one of the t-mag writers or other educated invididuals could contribute to this thread.

I am searching for answers to the following questions:

1.) why is it reccomended to take ALA with your post workout drink but to avoid taking METFORMIN ?

2.) Which one is more desireable from an “improving insulin sensitivity” point of view ?

3.) How do the physiological effects of METFORMIN and ALA differ from one another ?

J