Side-by-side comparison
IGF-1 LR3 vs PEG-MGF — Price & Profile Comparison
IGF-1 LR3
Growth Factor Analog PeptideMuscle / IGF research
PEG-MGF
Growth Factor Analog PeptideMuscle / IGF research
The short answer
IGF-1 LR3 vs PEG-MGF: which to choose
PEG-MGF is the cheaper option — roughly $120 vs $450 for the lowest verified listing. IGF-1 LR3 is the more widely stocked of the two (21 vendors vs 3). 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
PEG-MGF
Vendors Carrying Both
3 vendors stock both IGF-1 LR3 and PEG-MGF — convenient if you want to bundle an order.
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.
PEG-MGF
FDA: Not FDA-approved
PEGylated MGF; extended half-life; limited data; no proven major harms; sourcing quality main concern
Explore Further
IGF-1 LR3