Well, HGH is known to raise RHR. But outside of that, I understand well what RHR response I have to different AAS and at what dosage things can escalate it further. Nebivolol keeps my RHR in the late 60s on any compounds, even on Tren. The bottom line being that any AAS-mediated increases get hammered by 5mg Nebivolol for me personally, and no dosages have withstood 10mg. It works everytime.
When HGH/GLP1s were added. RHR shot up to 87-95 with no other changes, and it doesn't reduce when adding further beta blocker dosages. I tried 15mg Nebivolol, no change. I tried 10mg Nebivolol and 80mg short-acting Propranolol. No change, only my blood pressure got slammed.
RHR will also begin to lower if I skip a day of HGH. There are quite a few threads on here about it, and recently
@malfeasance documented his HR being lower during cardio after skipping HGH shots.
As mentioned, HGH and GLP-1s are well documented for causing RHR increases, although different mechanisms that aren't reduced via beta blockers. Therefore I'm going to give Iva a try as it works directly to slow the heart rate and should combat the three AAS/GH/GLP mediated increases. Small dose of Nebivolol on top if needed for BP.