Ipamorelin – Growth Hormone-Releasing Peptide

Ipamorelin is a growth hormone secretagogue studied for its effects on growth hormone release. Human pharmacokinetic research cited in the source used intravenous infusion, while commonly discussed subcutaneous schedules remain unvalidated.

By

Peptide Dosing Library
Research & Education

Last reviewed

November 2026

2

Discussed Administration Routes

5

Human IV Infusion Levels

2 Hours

Approximate Terminal Half-Life

3

Example Concentration Calculations
Research reference for Ipamorelin and growth hormone pharmacokinetics

Ipamorelin

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OVERVIEW

Understanding Ipamorelin

Ipamorelin is a growth hormone secretagogue investigated for its ability to stimulate growth hormone release. The source distinguishes human intravenous pharmacokinetic research from unvalidated community-reported subcutaneous schedules.

Peptide Name

Ipamorelin

Peptide Type

Growth hormone secretagogue

Primary Research Focus

Growth hormone release and pharmacokinetics

Human Research Route

Intravenous (IV) infusion

Approximate Terminal Half-Life

Approximately two hours in the cited human pharmacokinetic study

Evidence Context

Human IV research does not establish subcutaneous safety, dosing limits or fasting benefits.

IV Research Does Not Validate SC Use

The cited human pharmacokinetic study used intravenous infusion. Its findings cannot establish a proven subcutaneous maximum, saturation ceiling or community administration schedule.

REPORTED COMMUNITY SCHEDULES

Reported Administration Patterns

The source describes community-reported subcutaneous schedules. These examples have not been validated by the cited human IV pharmacokinetic research and are not treatment recommendations.

SC example

Per administration

Frequency

Daily total

Reported cycle

Week 1

100 mcg per day
Once daily or equally divided twice daily
100 mcg
Week 1

Weeks 2–3

200 mcg per day
Once daily or equally divided twice daily
200 mcg
Weeks 2–3

Weeks 4–12

200–300 mcg total per day
Once daily or equally divided twice daily
200–300 mcg
Weeks 4–12

Week 1

Per administration

100 mcg per day

Frequency

Once daily or equally divided twice daily

Daily total

100 mcg

Reported cycle

Week 1

Weeks 2–3

Per administration

200 mcg per day

Frequency

Once daily or equally divided twice daily

Daily total

200 mcg

Reported cycle

Weeks 2–3

Weeks 4–12

Per administration

200–300 mcg total per day

Frequency

Once daily or equally divided twice daily

Daily total

200–300 mcg

Reported cycle

Weeks 4–12
If a community report describes 300 mcg total daily divided twice, that means 150 mcg per administration, not 300 mcg each. A four-week break is also mentioned but remains unvalidated.

Unvalidated Subcutaneous Examples

Fasting, dose splitting, subcutaneous maximums and on/off cycles are not established by the cited IV study. No proven subcutaneous saturation ceiling is identified in the source.

SAFETY

Safety Considerations

The source notes that human subcutaneous safety and dose limits remain unestablished. Intravenous pharmacokinetic findings cannot independently validate community-reported subcutaneous practices.

Important Safety and Evidence Concerns

Important Cautions

STORAGE & HANDLING

Storage and Monitoring

Storage

The cited human IV research does not establish a universal vial storage period.

Product Stability

No universal storage or discard period is established by the cited IV pharmacokinetic research.

Monitoring Considerations

Glucose, IGF-1 and edema are discussed as monitoring considerations.

Dose Interpretation

There is no proven subcutaneous saturation ceiling in the source. IV findings should not be used to validate community SC assumptions.

CONCENTRATION WORKSHEET

Example Concentration Calculations

The source provides three independently recomputed mathematical concentration examples. These are reference calculations only, not preparation or administration instructions.

Amount (mg)

Final volume (mL)

Concentration (mg/mL)

Per 1 U (mcg)

Per 10 U (mcg)

2

1
2
20
200

5

2
2.5
25
250

Amount (mg)

2

Final volume (mL)

1

Concentration (mg/mL)

2

Per 1 U (mcg)

20

Per 10 U (mcg)

200

Amount (mg)

5

Final volume (mL)

2

Concentration (mg/mL)

2.5

Per 1 U (mcg)

25

Per 10 U (mcg)

250
Additional source example: 10 mg / 3 mL = 3.333 mg/mL, 33.33 mcg per 1 U and 333.3 mcg per 10 U. U refers to a U-100 volume marking (1 U = 0.01 mL). These are mathematical examples only, not mixing or administration instructions.

CLINICAL EVIDENCE

What Does the Research Show?

The cited human pharmacokinetic research examined intravenous Ipamorelin infusion at five short exposure levels. It reported an approximate two-hour terminal half-life, but does not establish subcutaneous schedules or fasting benefits.

01

Human Pharmacokinetic Research

Human pharmacokinetic research examined Ipamorelin through intravenous infusion.

02

Five IV Infusion Levels

The cited study used five short intravenous infusion levels.

03

Approximate Two-Hour Half-Life

The study found an approximate two-hour terminal half-life. This does not establish subcutaneous dosing or fasting benefits.

REGULATORY INFORMATION

Regulatory and Research Limitations

No Validated Subcutaneous Protocol

The cited human pharmacokinetic study used IV infusion and does not establish a validated subcutaneous maximum, saturation ceiling, safety profile or treatment schedule. Community-reported practices should not be interpreted as proven clinical protocols.
This page is for educational and research reference only. It is not medical advice or a recommendation to use Ipamorelin.