Side-by-side comparison
IGF-1 LR3 vs MGF — Price & Profile Comparison
IGF-1 LR3
Growth Factor Analog PeptideMuscle / IGF research
vs
MGF
Growth Factor Analog PeptideMuscle / IGF research
IGF-1 LR3
MGF
Cheapest price
$449.91 /10mg
No data
Vendors stocking
21
0
Regulatory status
Not FDA-approved (never tested in humans)
Not FDA-approved
Mol. weight
9,117.60 g/mol
≈2,867 g/mol (24-aa synthetic form)
The short answer
IGF-1 LR3 vs MGF: which to choose
Only IGF-1 LR3 has in-stock verified listings at the moment. Both are growth factor analog peptide compounds, so the decision usually comes down to price, evidence, and tolerability rather than use case.
Price Comparison — 2026
IGF-1 LR3
VendorPrice
MGF
No in-stock listings right now.
Safety Notes
IGF-1 LR3
FDA: Not FDA-approved (never tested in humans)
Documented animal DEATHS from prolonged (20–30h) hypoglycemia; severe acute hypoglycemia risk; cancer-proliferation concern (IGF-1 epidemiologically linked to several cancers); zero human trials; species-paradoxical responses. WADA-banned.
MGF
FDA: Not FDA-approved
IGF-1 splice variant; limited data; localized action; no proven major harms in available studies