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/ comparison

Ipamorelin
vs
GHRP-2

Side-by-side comparison of mechanism, research, dosing, side effects, and pricing.

peptide

Ipamorelin

Selective ghrelin receptor agonist. Cleanest GH stimulator for research.

Cheapest
$26.52
5mg at Nano Blue Labs
See Ipamorelin →
peptide

GHRP-2

Second-generation GHRP. Stronger than ghrp-6 with less appetite effect.

Cheapest
$24.16
5mg at Southern Aminos
See GHRP-2 →
/ research scoring

Research base

Ipamorelin
Research Maturity★★★★☆
Evidence Strength★★★★☆

50+ studies. Best GHS for avoiding side effects. Works well alone or stacked.

GHRP-2
Research Maturity★★★★☆
Evidence Strength★★★★☆

Decades of research. Reliable GH stimulator.

/ mechanism

How they work

Ipamorelin

Ghrelin receptor (GHSR1a) agonist. Pulsatile GH release without cortisol/prolactin increase.

GHRP-2

Ghrelin receptor agonist.

/ research dosing

Protocols compared

Ipamorelin
Range: 200-300 mcg/dose, 1-3x daily
Frequency: 1-3x daily; before bed is most common
Route: Subcutaneous on empty stomach
Selective GH secretagogue — no cortisol, prolactin, or appetite increase (unlike GHRP-6/2). Frequently paired with CJC-1295 (no DAC) at matched doses. Bedtime dosing aligns with natural nocturnal GH pulse. Empty stomach (no carbs/protein 2 hours before) maximizes pulse.
GHRP-2
Range: 100-300 mcg, 2-3x daily
Frequency: 2-3x daily, with at least one before bed
Route: Subcutaneous on empty stomach
Stronger GH pulse than ipamorelin but increases cortisol, prolactin, and appetite. Often paired with Mod-GRF. Receptor desensitization develops with continuous use — cycling needed.
/ side effects & timeline

What to expect

Ipamorelin
Side effects

Very low side effect profile.

Timeline

4-8 weeks for noticeable effects

GHRP-2
Side effects

Mild prolactin/cortisol elevation possible.

Timeline

2-4 weeks

/ pricing

Price comparison

Ipamorelin
Lowest price$26.52 (5mg)
Min $/mg$3.02/mg
Avg $/mg$7.13/mg
Max $/mg$12.28/mg
GHRP-2
Lowest price$24.16 (5mg)
Min $/mg$2.81/mg
Avg $/mg$6.08/mg
Max $/mg$10.76/mg
/ which to pick

The honest verdict

Pick Ipamorelin if: Strong standalone option. Selectivity is key advantage.

Pick GHRP-2 if: Effective alone. Cleaner than GHRP-6.

Why not both? Some researchers run them together. Check our Interaction Matrix to see if these compounds synergize or work independently.

FOR RESEARCH USE ONLY. Both compounds are intended for laboratory research and not for human consumption.