Vigorous Steve — Optimizing Growth-Hormone Output with Secretagogues

Lowest-tier source — bodybuilding creator, supraphysiologic framing

A solo bodybuilding-creator video aimed at pushing GH to “supra-physiological levels.” Treat as [anecdote-bb] — the weakest evidence class here. The underlying GH-axis biology is broadly textbook and useful; the enhancement framing and some tactics are not endorsed. Not endorsed / flagged: mega-dose melatonin (up to 100 mg) — hazardous; off-label DPP-4-inhibitor (gliptin) use to extend peptide half-life — Rx misuse with thin evidence; clonidine/nicotine for GH. These are recorded as “discussed,” not recommended. Research/educational use only. Source: YouTube — Rrn5tkATgXw (No verbatim transcript stored — only the in-policy knowledge below.)

GH-axis biology (the useful, broadly-textbook part)

• Pulsatile secretion: ~3–5 larger + 5–7 smaller GH pulses per 24 h; the biggest pulse is in early sleep and is augmented by melatonin. With age the pulse frequency holds but peak amplitude falls.
• Drivers: GHRH (hypothalamus) + ghrelin (stomach) stimulate GH release; somatostatin (GHIH) inhibits it (released on eating; also a brain-level negative-feedback when GH is high). GHRH rises when blood glucose is low and during sleep. Negative feedback also comes from circulating IGF-1 (elevated up to ~36 h on secretagogues).
• Natural levers that raise GH: sleep on circadian rhythm; vigorous exercise above the lactate threshold for ≥10 min (amplifies 24-h pulsatility); fasting (strongest after ≥2 days; intermittent fasting milder); low evening glucose. Arginine (5–10 g) blunts somatostatin (synergistic with ornithine and lysine); GABA, glycine, glutamine also discussed. Lowering cortisol helps (cortisol blunts GH).
• Blunting factors to avoid: hyperglycemia; high free fatty acids (mitigated by niacin/B3); benzodiazepines & baclofen (GABAergic drugs lower GH, unlike GABA supplements); glucocorticoids; possibly DHT.
• Age decline (key datum): GH secretion 150 mcg/kg/day at puberty → ~25 mcg/kg/day by 55 (85% drop over 40 years), mostly the nighttime pulses. IGF-1 has clear age-banded reference ranges, declining steadily after ~18.
• Methylene Blue note: although a phenothiazine derivative, there’s no evidence it lowers GH — so it’s fine to use for mitochondrial/cognitive purposes alongside this axis. [00:15:17]

Secretagogue reference (community/enhancement dosing — [anecdote-bb], not advice)

• GHRH-receptor agonists: CJC-1295 (no-DAC 150–300 mcg SubQ ≤3×/day; DAC version 1–2 mg once weekly), sermorelin (150–300 mcg), Tesamorelin (1–2 mg), “celin/telan” variants.
• Ghrelin-receptor agonists (GHRPs): GHRP-2 (≈ “pralmorelin”, 150–300 mcg), GHRP-6 (100–200 mcg), hexarelin (100–150 mcg), Ipamorelin (150–300 mcg), MK-677 / ibutamoren (20–30 mg oral, nightly — the popular oral option), NN-703/tabimorelin (oral, scarce).
• Most popular combos: CJC-1295-DAC (weekly) + MK-677 (nightly) for minimal injections; tesamorelin + ipamorelin (injected 1–3×/day) for the “no-needle-fear” crowd.

Honest takeaway (reinforces the physician episodes)

Secretagogues are rate-limited by your pituitary and give modest GH — especially in older people whose endogenous output has already fallen ~85%. The creator concludes that ~2.4 IU exogenous GH produced far higher serum GH/IGF-1 than any secretagogue protocol he tried — i.e. exogenous GH is better value per dollar for raising levels. [00:18:28]

Candidates reinforced (no note yet)

MK-677 / ibutamoren (recurring across 4+ sources — overdue for a note), sermorelin (recurring), GHRP-2, GHRP-6, hexarelin, NN-703/tabimorelin.