Ancillary / Dopamine Agonist

Cabergoline (Dostinex)

Dopamine D2 agonist. FDA-approved for hyperprolactinaemia. Used to control prolactin elevation on 19-nor compounds (Deca, Tren) and certain GHRPs. Long half-life — 0.5 mg twice weekly is standard.

Build protocol outline Open dose calculator TNHL ebooks

Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dose0.25–1 mg twice weekly

Half-life65 hours

Risk flagmoderate

Regulatory noteFDA-approved context noted

Side effects and watch-outs

Nausea (take at night with food)
Dizziness/orthostatic hypotension (stand slowly)
Fatigue
Headache
⚠️ Compulsive behaviours at high doses (gambling, hypersexuality — rare but reported)
Cardiac valve thickening with very high chronic doses (Parkinson's doses — much higher than AAS protocol doses)
Avoid alcohol — significantly enhances hypotensive effect