What is the difference between Ghrelin and IGF-DES?

Ghrelin: Must be acylated at Ser3 (by GOAT enzyme) for GHSR-1a binding. Receptor activation in the pituitary stimulates GH release; hypothalamic action via NPY/AgRP neurons increases appetite and reduces energy expenditure. IGF-DES: N-terminal truncation eliminates IGFBP binding, leaving nearly all circulating IGF-DES unbound and active. Results in substantially higher tissue IGF-1R activation versus native IGF-1 at equivalent doses.

Is Ghrelin FDA approved?

Ghrelin is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is Ghrelin administered in research settings?

In research settings, Ghrelin is typically administered via the subcutaneous or intravenous routes. PeptideBase does not provide dosing or administration instructions.

How is IGF-DES administered in research settings?

In research settings, IGF-DES is typically administered via the subcutaneous or intramuscular routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Ghrelin vs IGF-DES

Peptide Comparison

Ghrelin vs IGF-DES

Both are GH / IGF Axis peptides.

Ghrelin

acyl ghrelin

PerformanceNot EvaluatedResearch Only

Half-life: ~24 min (initial), ~146 min (terminal)

3 providers listed

Full Ghrelin profile →

IGF-DES

des(1-3)IGF-1

PerformanceResearch Only

3 providers listed

Full IGF-DES profile →

Bottom line

Ghrelin has published research citations on file; IGF-DES does not yet — the main evidence gap between them.

Quick Verdict

Ghrelin

Half-life

~24 min (initial), ~146 min (terminal)

IGF-DES

Half-life

—

Which One Should You Choose?

Your goal	Better option
Has published research citations	Ghrelin

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Ghrelin

IGF-DES

Mechanism Family

GH / IGF Axis

Half-life

~24 min (initial), ~146 min (terminal)

—

FDA Status

not evaluated

unknown

Admin Routes

subcutaneous, intravenous

subcutaneous, intramuscular

Availability

Research Only

Providers

3 listed

Research Evidence

Ghrelin

RCT · 5 key studies · most recent 2026

IGF-DES

No citations on file

Research Citations

Ghrelin

RCT2026 · Alcohol Clin Exp Res (Hoboken)

A Secondary, Subgroup Analysis of Alcohol Cue-Exposure Craving in Response to Pharmacological Inhibition of t…

RCT2023 · Journal of Cachexia, Sarcopenia and Muscle

Pilot clinical trial of macimorelin to assess safety and efficacy in patients with cancer cachexia

RCT2020 · Growth Hormone & IGF Research

Safety, tolerability, pharmacokinetics, and pharmacodynamics of macimorelin in healthy adults: Results of a s…

RCT2007 · Am J Physiol Endocrinol Metab

Constant intravenous ghrelin infusion in healthy young men: clinical pharmacokinetics and metabolic effects

+1 more

IGF-DES

No citations on file.

About Ghrelin

Must be acylated at Ser3 (by GOAT enzyme) for GHSR-1a binding. Receptor activation in the pituitary stimulates GH release; hypothalamic action via NPY/AgRP neurons increases appetite and reduces energy expenditure.

Research Areas

GH stimulationappetite stimulationmetabolic regulationmuscle preservation

About IGF-DES

N-terminal truncation eliminates IGFBP binding, leaving nearly all circulating IGF-DES unbound and active. Results in substantially higher tissue IGF-1R activation versus native IGF-1 at equivalent doses. Activates PI3K/Akt/mTOR for muscle hypertrophy and satellite cell proliferation.

Research Areas

muscle hypertrophylocalized anabolismsatellite cell activationtissue growth

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Ghrelin

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

IGF-DES

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Find Providers

Where to source these peptides

Providers offering

Ghrelin

3 listed

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Providers offering

IGF-DES

3 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More GH / IGF Axis Comparisons

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Educational research tools — not medical advice.