IGF-1 LR3 vs Myostatin
Which should you choose? Here's what you need to know.
The short answer
IGF-1 LR3 and Myostatin are both growth hormone peptides, but they work differently. A modified version of IGF-1 with an extended half-life due to an arginine substitution. Studied for its potent growth-promoting and anabolic effects. Compare vendor pricing and availability below.
IGF-1 LR3
Growth HormoneA modified version of IGF-1 with an extended half-life due to an arginine substitution. Studied for its potent growth-promoting and anabolic effects.
Myostatin
Growth HormonePrice & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Sep 20, 2026.
IGF-1 LR3
Myostatin
$12.00
Starting from
$86.27
$161.44
Avg. price per mg
$93.42
45
Vendors selling it
3
38 options
In stock now
0 options
9.1/10
Top trust score
4.0/10
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Our top-rated vendor for each, based on trust scores, purity testing, and price.
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Where does this data come from?
We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.