The increase in allopregnanolone synthesis from activation of glycine receptors appears to differ from the way fluoxetine and other SSRIs increase allopregnanolone.
There have been studies posted on this site showing that SSRIs drastically increase allopregnaolone and adiol-g concentrations at the expense of DHP and DHT. (5-ar activity can’t compensate for the increased 3a-HSD activity caused by SSRIs). The resulting DHT deficiency has been speculated to trigger PSSD (Post-SSRI Sexual Dysfunction), in a similar manner as 5-ar inhibition may cause PFS. Either way, you end up with cells that are starved of DHT and other 5-ar metabolites. Not good.
Fairly certain Prof. Melcagni’s neurosteroid study discovered very low levels of DHP in the cerebrospinal fluid of PFS patients.
Another study on glycine receptor agonists where increase of 3a-HSD activity was observed without a decrease in 5-ar metabolites:
V. C, B. N, M.-N. Ag, and P.-M. C, “Comparative Analysis of Gelsemine and Gelsemium sempervirens Activity on Neurosteroid Allopregnanolone Formation in the Spinal Cord and Limbic System., Comparative Analysis of Gelsemine and Gelsemium sempervirens Activity on Neurosteroid Allopregnanolone Formation in the Spinal Cord and Limbic System,” Evid Based Complement Alternat Med, vol. 2011, 2011, pp. 407617–407617, 2011.
http://europepmc.org/articles/pmc3136435
So, perhaps glycine and gelsemine are ideal treatments to try out considering they may increase allopregnanolone and don’t appear to decrease DHP at the same time.