Originally Posted by
MungYarlon
Glycine helps for two reasons, the first being its ability to increase synthesis of allopreganolone (see study below) and the second being its agonism on the glycine receptor, which is also sedative (similarly to allopreganolone's agonism on the GABA receptor).
Once whatever has happened to the SRD5A1 gene, which is inhibiting production of allopreganolone, has been reversed, you won't need to take the glycine if you don't want to.
You can continue taking it though. Glycine isn't addictive, and you won't really develop a tolerance to it.