IGF-1 LR3 vs Tesamorelin
Which should you choose? Here's what you need to know.
The short answer
Tesamorelin tells your body to make more growth hormone naturally. IGF-1 LR3 bypasses GH entirely and delivers a long-acting growth factor directly — more potent but with more risk.
On 9 Oct 2026 Peptide Compare tracked 46 vendors selling IGF-1 LR3, cheapest in stock $20.83 per mg at Bio Pepz, and 59 selling Tesamorelin, cheapest $2.80 per mg at Bio Pepz.
IGF-1 LR3
Growth HormoneIGF-1 LR3 is a modified insulin-like growth factor with a 20-30 hour half-life and ~2.5x the potency of natural IGF-1. It directly stimulates muscle growth and recovery without going through GH.
Choose IGF-1 LR3 if:
You want direct, potent growth factor stimulation for muscle growth and are comfortable with a research compound that carries more risk.
Tesamorelin
Growth HormoneTesamorelin is an FDA-approved GHRH analog that stimulates your pituitary to produce more GH naturally, which then produces IGF-1 through normal pathways. It's a gentler, more physiological approach.
Choose Tesamorelin if:
You prefer a natural GH stimulation approach with FDA approval and a better safety profile, even if the growth effects are less direct.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Oct 9, 2026.
IGF-1 LR3
Tesamorelin
$12.00
Starting from
$15.00
$164.45
Avg. price per mg
$13.39
46
Vendors selling it
59
40 options
In stock now
97 options
9.1/10
Top trust score
9.0/10
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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.