Limited human dataFDA 503A Category 2

GHRP-2 and GHRP-6 dosage

Also known as: GHRP-2 · GHRP-6 · Pralmorelin · KP-102 · GPA-748 · GHRP Kaken 100 · Growth hormone-releasing hexapeptide · SKF-110679

Updated Oct 24, 202629 sources

Every GHRP-2 and GHRP-6 protocol on file, 13 in all, labelled by where each number came from.

GH axis

Calculate with GHRP-2 and GHRP-6 GHRP-2 and GHRP-6 overview

GHRP-2 and GHRP-6 dosage by goal

Grouped by goal. Each protocol shows the amount, how often, cycle and rest as the source states them, with every titration step.

GHRP-23

GHRP-2: forum convention

Amount: 100 to 150 mcg
How often: 2 to 3 times daily, fasted
Route: Subcutaneous injection
Cycle: 8 to 12 weeks

Who: Forum protocols compiled in a 2026 peer-reviewed review

GHRP-2: educational chart

Amount: 100 to 300 mcg
How often: Once daily
Route: Subcutaneous injection

GHRP-2: diagnostic test dose

Amount: 100 mcg
How often: A single IV dose for the test
Route: Other route

Who: Adults tested for GH deficiency in Japan

Timing: After an overnight fast. GH peaked within 60 minutes in all subjects.

GHRP-63

GHRP-6: forum convention

Amount: 100 to 300 mcg
How often: 2 to 3 times daily, fasted
Route: Subcutaneous injection
Cycle: 8 to 12 weeks

Who: Forum protocols compiled in a 2026 peer-reviewed review

GHRP-6: educational chart

Amount: 100 to 300 mcg
How often: 300 to 900 mcg a day, split into 3 doses
Route: Subcutaneous injection

Timing: Doses 4 or more hours apart.

GHRP-6: weight-based framing

Amount: 100 to 300 mcg
How often: 2 to 3 times daily, about 1 to 3 mcg/kg per shot
Route: Subcutaneous injection

Timing: Fasted, 2 or more hours after food, then wait 20 to 30 minutes before eating.

Other protocols: injected7

Self-logged doses (either peptide)

Amount: 200 to 400 mcg
How often: Per logged entry; median bucket 200 to 400 mcg for both
Route: Subcutaneous injection

Who: Self-logging tracker users; 24 repeat reporters for GHRP-2

Standard shot (either peptide)

Amount: 100 mcg
How often: 1 to 3 times daily; the bedtime shot matters most
Route: Subcutaneous injection
Cycle: 12 to 16 weeks to judge; 5 on, 2 off for long-term use

Timing: GHRP-2 also fits pre-training. For GHRP-6, plan a meal 30 to 60 minutes after each shot, for example at 07:00, 13:00 and 22:00.

Advanced shot (either peptide)

Amount: 150 to 200 mcg
How often: 1 to 3 times daily
Route: Subcutaneous injection

5 days a week (either peptide)

Amount: 100 to 300 mcg
How often: 2 to 3 times daily, 5 days a week
Route: Subcutaneous injection
Cycle: 4 to 8 weeks on
Rest: 2 to 4 weeks off

Timing: Fasted, 2 or more hours after food, then wait 20 to 30 minutes before eating.

GHRP-2 with CJC-1295 no DAC (GHRP-2 amount; CJC 100 mcg)

Amount: 100 to 200 mcg
How often: 2 to 3 times daily
Route: Subcutaneous injection

GHRP-6 with CJC-1295 no DAC (GHRP-6 amount; CJC 100 mcg)

Amount: 200 mcg
How often: 2 to 3 times daily
Route: Subcutaneous injection
Cycle: 12 to 16 weeks on
Rest: 4 to 8 weeks off

Clinic regimen: GHRP-2 plus GHRP-6 plus sermorelin (each)

Amount: 100 mcg
How often: 3 times daily, GHRP-2 and GHRP-6 at 100 mcg each with sermorelin
Route: Subcutaneous injection
Cycle: Mean of 134 days in the review

Who: Hypogonadal men in a men's health clinic record review

Doses shown are what sources report, labelled by origin. Not medical advice.

Community-reported amounts

The GHRP-2 and GHRP-6 amounts people mention most on Reddit, by goal. Counts, not recommendations.

GHRP-2 and GHRP-6 amounts reported on Reddit, by goal, with mention counts
Goal	Most reported amounts (mentions)
Muscle growth	100 mcg (4)
Weight loss	100 mcg (3)

From 266 Reddit posts and comments, last mined Oct 23, 2026.

GHRP-2 and GHRP-6 dosage chart by vial size

Units to draw for the doses sources cite most, at every vial size and water volume.

GHRP-2 and GHRP-6: concentration and U-100 syringe units for each vial size and water volume
Water	Strength	100 mcgdose, units	200 mcgdose, units	300 mcgdose, units
2 mg vial
2 mLCompetitor guide^†	1 mg/mL	100.1 mL	200.2 mL	300.3 mL
3 mLCompetitor guide^†	0.667 mg/mL	150.15 mL	300.3 mL	450.45 mL
5 mg vial
2 mLCompetitor guide	2.5 mg/mL	40.04 mL	80.08 mL	120.12 mL
3 mLCompetitor guide	1.667 mg/mL	60.06 mL	120.12 mL	180.18 mL
10 mg vial
2 mLCompetitor guide^†	5 mg/mL	20.02 mL	40.04 mL	60.06 mL
3 mLCompetitor guide^†	3.333 mg/mL	30.03 mL	60.06 mL	90.09 mL

Units are on a U-100 insulin syringe (100 units = 1 mL). U-50 and U-30 barrels read the same units.† Water volume sourced for a different vial size. The math is exact either way.Water volumes from

Doses shown are what sources report, labelled by origin. Not medical advice.

Calculate with this peptideYour vial, your water, your dose: GHRP-2 and GHRP-6 in syringe units, with the math shown.

Mixing GHRP-2 and GHRP-6

Diluent: Bacteriostatic water

Water volumes sources use: 2 mL, 3 mL

GHRP-2 comes in 5 and 10 mg vials; GHRP-6 in 2, 5 and 10 mg. 2 mL in a 5 mg vial is the common choice. A 10 mg CJC-1295 plus GHRP-2 blend is sold, but no water volume was found for it.

GHRP-2 and GHRP-6 dosage questions

How much per shot?

About 100 mcg, 2 to 3 times a day, is the center. Forum protocols run 100 to 150 mcg for GHRP-2 and up to 300 mcg for GHRP-6.

Why do guides stop at 100 mcg?

Guides say about 1 mcg/kg, roughly 100 mcg, gives near-maximal GH, and more adds side effects faster than GH. The data are softer than that: in older adults, 10 mcg/kg of GHRP-2 still roughly doubled GH compared with 1 mcg/kg. Saturation is not absolute.

How much water for a 5 mg vial?

2 mL is common, giving 2.5 mg/mL. Use the calculator to turn your dose into syringe units.

How long is a cycle?

8 to 12 weeks in forum protocols, 12 to 16 weeks in some guides, often 5 days on and 2 off. One guide runs 4 to 8 weeks with 2 to 4 off.

Is there a 10 mg GHRP-6 vial?

Yes, 10 mg vials are sold.

Sources for these doses

15 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Clinical study2

Simple diagnostic test using GHRP-2 in adult GHD (Chihara 2007)PubMed · checked Oct 23, 2026
GHS treatment in hypogonadal men raises IGF-1 (Sigalos 2017)PubMed · checked Oct 23, 2026

Competitor guide10

GHRP-2 dosage guideBodyHackGuide · checked Oct 23, 2026
GHRP-6 dosage guideBodyHackGuide · checked Oct 23, 2026
GHRP-2 protocolPathToPeptides · checked Oct 23, 2026
GHRP-6 protocolPathToPeptides · checked Oct 23, 2026

Community-reported3

Performance-enhancing peptides modulating GH-IGF1 axis (Dominikowski 2026)PMC · checked Oct 23, 2026
GHRP-2 (self-logged doses)PeptIQ · checked Oct 23, 2026
GHRP-6 (self-logged doses)PeptIQ · checked Oct 23, 2026

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