We are just using Androsterone only in the new Formadrol vs. Androsterone/ATD combo.
Androsterone is still a very good AI...
We also added in some new things like the Ginger which really helps recovery for PCT and a higher dosed SERM (Ellagic Acid)
Ginger 10X Extract
"The aqueous extract of Z. officinale significantly increased in the relative weight of the testis, the serum testosterone level, testicular cholesterol level and epididymal a-glucosidase activity."