PrRP 1-31

[OnyxGirl]

I have struggled to find information on this peptide and usage on humans in trials. I have a lab rat that has low prolactin levels and would like to raise them.

 

[Casme]

There likely isn’t any in humans. There’s a study that talks about its use in rats. 5 nmols means they’re injecting about 20 ug into rats. Without actually doing the math this is probably close to 2-4 mg for a human equivalent dose. From what I’ve briefly read about it, it seems Endocrinologists are more concerned with investigating and addressing the underlying cause as opposed to raising the prolactin levels directly. The amount readily available for purchase online cannot be turned into anything therapeutic.

Prolactin releasing peptide (PrRP) stimulates luteinizing hormone (LH) and follicle stimulating hormone (FSH) via a hypothalamic mechanism in male rats - PubMed

Prolactin releasing peptide (PrRP) was originally isolated as an endogenous hypothalamic ligand for the hGR3 orphan receptor. It has been shown to release prolactin from dispersed pituitaries harvested from lactating female rats and only at very high doses in cycling females. PrRP is reported to...

pubmed.ncbi.nlm.nih.gov

You may find some value in looking into bioregulators (Endokron or Glandokort) or pituitary granular as an alternative.