PinnyPeptide

GHRP-2 vs Tesamorelin

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

GHRP-2

Growth Hormone

Refined ghrelin mimetic — stronger GH release than GHRP-6 with less hunger.

Peptide B

Tesamorelin

Growth Hormone

FDA-approved GHRH analog for HIV-associated lipodystrophy with potent GH-releasing activity.

Typical vial

5 mg

Typical dose

100 mcg

Half-life

~15-60 minutes

FDA status

Not FDA approved for any indication.

Typical vial

2 mg

Typical dose

1000-2000 mcg

Half-life

~26 minutes

FDA status

FDA approved. Egrifta (tesamorelin) approved November 2010 f…

GHRP-2 effects

  • Stronger pulsatile GH release than GHRP-6 at equivalent doses
  • Less appetite stimulation than GHRP-6 (but more than Ipamorelin)
  • Synergizes with GHRH analogs for amplified GH pulses
  • Used clinically (Japan) to diagnose adult growth hormone deficiency
  • Secondary IGF-1 elevation over multi-week courses

Tesamorelin effects

  • FDA-proven reduction of visceral adipose tissue
  • Stimulates physiological pulsatile GH release
  • Improves body composition by reducing trunk fat
  • May enhance cognitive function in older adults
  • Increases IGF-1 levels
  • Does not significantly affect glucose homeostasis at approved doses

GHRP-2 side effects

  • Mild appetite increase (less than GHRP-6)
  • Elevated prolactin and cortisol (less than GHRP-6)
  • Head rush or flushing immediately after injection
  • Water retention with chronic dosing
  • Possible tachyphylaxis with continuous high-frequency use

Tesamorelin side effects

  • Injection site reactions (erythema, pruritus, pain)
  • Arthralgia (joint pain)
  • Peripheral edema
  • Myalgia (muscle pain)
  • Hypersensitivity reactions (rare)
  • Potential increase in IGF-1 above normal range

GHRP-2 dosing ranges

GH optimization / anti-aging

100 mcg · Two to three times daily (SubQ) · 8-12 weeks

Combined with CJC-1295 (Mod GRF)

100 mcg of each · Two to three times daily · 8-12 weeks

Adult GHD diagnostic (Japan, clinical)

100 mcg IV bolus · Single dose · One-time test

Tesamorelin dosing ranges

HIV lipodystrophy (FDA approved)

2000 mcg · Once daily (SubQ) · Ongoing as prescribed

Body composition / anti-aging (off-label)

1000-2000 mcg · Once daily · 8-12 weeks

GHRP-2 vs Tesamorelin — common questions

What is the difference between GHRP-2 and Tesamorelin?

GHRP-2: Refined ghrelin mimetic — stronger GH release than GHRP-6 with less hunger. Typical dose 100 mcg. Tesamorelin: FDA-approved GHRH analog for HIV-associated lipodystrophy with potent GH-releasing activity. Typical dose 1000-2000 mcg. Both fall under the Growth Hormone category.

Can you stack GHRP-2 and Tesamorelin?

Stacking GHRP-2 with Tesamorelin is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, GHRP-2 or Tesamorelin?

GHRP-2 is typically dosed: Two to three times daily (SubQ) for GH optimization / anti-aging; Two to three times daily for Combined with CJC-1295 (Mod GRF); Single dose for Adult GHD diagnostic (Japan, clinical). Tesamorelin is typically dosed: Once daily (SubQ) for HIV lipodystrophy (FDA approved); Once daily for Body composition / anti-aging (off-label).

Are GHRP-2 and Tesamorelin FDA approved?

GHRP-2: Not FDA approved for any indication. Tesamorelin: FDA approved. Egrifta (tesamorelin) approved November 2010 for reduction of excess abdominal fat in HIV-infected patients with lipodystrophy. Egrifta SV (reformulated single-vial) approved 2019.

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