Carb cutoff before GHRH injection — how strict

C
Joined 2026
29 posts
4/6/2026 · 446 views

Protocol says no calories 2-3 hours pre-injection for GHRH compounds because elevated insulin blunts GH response. How strict does this have to be? Is 30 grams of carbs 90 min before going to kill my pulse?

4 Replies

H
Joined 2025
212 posts
hexaclinicContributor
4/6/2026

Not kill, but meaningfully reduce. 30g carbs 90 min before pre-bed Ipa/CJC will cut your GH pulse roughly 30-50%. Protein/fat only are much less disruptive. The 2-3 hour rule is conservative — 90 min post-meal is acceptable if the meal wasn't carb-heavy.

Q2 stack
  • CJC-1295 no DAC · 100 mcg · pre-bed · sub-Q
  • Ipamorelin · 200 mcg · pre-bed · sub-Q
  • BPC-157 · 500 mcg · 2x/day · sub-Q
S
Joined 2025
97 posts
4/8/2026

The pre-bed dose is the one where you protect the window hardest. AM fasted is easier to get right. If midday dose is post-meal, that's the one to 'relax' on — still do it, just know it's weaker.

Growth + recovery
  • CJC-1295 no DAC · 100 mcg · pre-bed · sub-Q
  • Ipamorelin · 200 mcg · pre-bed · sub-Q
  • BPC-157 · 250 mcg · 2x/day · sub-Q
C
Joined 2026
29 posts
4/8/2026

OK so dinner by 7:30, snack only if protein, pre-bed Ipa at 10. That works for my schedule.

P
Joined 2026
46 posts
15d ago

Honestly the 30-50% reduction hexaclinic threw out there is pretty hand-wavy without context. Depends on insulin sensitivity, meal composition, what GHRH you're running, baseline cortisol. I got bloods done fasted vs 20g carbs 90min pre-dose and saw maybe 15% difference in my GH peak, but my buddy's was closer to 40%. Point is you need your own data to know if you're actually losing meaningful gains or just following bro-science orthodoxy. The conservative window exists for a reason but if you're not measuring it you're basically guessing.

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