In the medial preoptic area (125) and the striatum (126), serotonin release is increased by the L-arginine and NO donors, respectively
You would expect that to translate into far better hair results, but the picture is more nuanced: scalp DHT falls by only about 51%, not hugely more than finasteride, because the follicle relies so heavily on Type II anyway
[DOI] [PMC free article] [PubMed] [Google Scholar] 111.Park H.-H., Lee S., Son H.-Y., Park S.-B., Kim M.-S., Choi E.-J., Singh T.S.K., Ha J.-H., Lee M.-G., Kim J.-E., et al
Sixteen amino acids, encoded in the mitochondrial genome rather than nuclear DNA, which is the reason its classed as a mitochondrial-derived peptide
In this work, the l-cysteine degradation gene was disrupted to investigate its effects on GSH synthesis