GHRP-6 vs IGF-1 LR3
Which should you choose? Here's what you need to know.
The short answer
GHRP-6 and IGF-1 LR3 are both growth hormone peptides, but they work differently. A growth hormone releasing peptide that acts on the ghrelin receptor to stimulate GH release and significantly increase appetite. 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.
On 20 Sep 2026 Peptide Compare tracked 22 vendors selling GHRP-6, cheapest in stock $2.80 per mg at Ruo Bio, and 45 selling IGF-1 LR3, cheapest $20.83 per mg at Bio Pepz.
GHRP-6
Growth HormoneA growth hormone releasing peptide that acts on the ghrelin receptor to stimulate GH release and significantly increase appetite.
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.
Price & 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.
GHRP-6
IGF-1 LR3
$14.00
Starting from
$12.00
$4.96
Avg. price per mg
$161.44
22
Vendors selling it
45
15 options
In stock now
38 options
9.1/10
Top trust score
9.1/10
Ready to buy?
Our top-rated vendor for each, based on trust scores, purity testing, and price.
Some outbound links may earn us a commission. Vendors cannot pay to improve rankings.
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.