Hi there 
From what i’ve heard, no mix has ever come close to the effectiveness of IS/A, however, i’ve also heard that the main ingredient in IS/A was TAL. I’ve never tried TAL myself, but apparently it gives you that dominant sexy vibe a bit like IS/A. The only problem is that TAL is currently out of stock 
.. so you may have to wait a while..
Maybe try reading the below: i’ve found it very useful
https://pheromonetalk.com/t/ladies-a-mini-compilation-of-your-personal-experiences/9383