Their hormonal profiles were very much synonymous with ours; depressed FSH and LH, elevated SHBG, low free testosterone despite normal total testosterone.
The reasoning behind this is that Anti-Epileptic drugs are p450 inducers. These are a group of enyzmes in the liver, one of which (CYP19A1) actively controls the conversion of testosterone to estrogen. Obviously, by accentuating this enzyme, you will cause a massive surge in estrogen. This stimulates SHBG, as the body wants to bind against testosterone to effectively slow the flow of aromatization. While this normalises estrogen serum, it leaves very little testosterone bio-available, hence the problems with libido/motivation etc.
So what has this got to do with Finasteride? It’s been previously discussed on here that it can similarly induce these enyzmes, and a heptalogist I recently spoke to agreed with that theory as well. If increased aromatization is the root cause, any drug that may actively reverse that is definitely worth experimenting with.