← All compoundsBuy at Double R Labs →Buy at AMC Essentials →Buy at Welli Labs →Buy at Atomik Labz →Buy at LA Peptides →Buy at Peppy →Buy at Purus Peptides →Buy at Molecular Solutions →Buy at Omegamino →Buy at Biocase Innovations →Buy at Southern Aminos →Buy at Throne →Buy at Renova Peptides →Buy at Ion Peptide →Buy at EZ Peptides →Buy at Glow Aminos →Buy at RefillPen →Buy at FITSKNS →Buy at Solyn Peptides →Buy at Peptira →Buy at Nano Blue Labs →Buy at Good Labs →Buy at Valor Peptides →Buy at Peptidology →Buy at RetaOneLabs →Buy at Modified Aminos →Buy at Solution Peptides →Buy at One Day Compounds →Out of stockOut of stock
peptide28 sources in stock
IGF-1 LR3
Long-Range Insulin-Like Growth Factor-1
Long-acting IGF-1 analog. Direct anabolic signaling.
Anabolic researchTissue research
For research use only · Not for human consumption
/ compare by size
Every source for IGF-1 LR3
Affiliate disclosure: purchases through links below may earn us a commission. Rankings are never sold — methodology · full disclosure
Size:
28 sources for 1mg·cheapest $59.49 at Double R Labs (with code)·$69.99/mg
Rank
Source
Trust Score
Price
$/mg
Buy
#1
Double R LabsBEST
★ 4.7
$69.99
$59.49
with code
#2
AMC Essentials
★ 4.6
$59.99
$59.99/mg
#3
Welli Labs
★ 4.6
$59.99
$59.99/mg
#4
Atomik Labz
★ 4.7
$85.00
$85.00/mg
#5
LA Peptides
★ 4.6· price unverified
$51.55
$51.55/mg
#6
Peppy
★ 4.7· price unverified
$56.67
$56.67/mg
#7
Purus Peptides
★ 4.7· price unverified
$58.55
$58.55/mg
#8
Molecular Solutions
★ 4.7· price unverified
$58.90
$58.90/mg
#9
Omegamino
★ 4.5· price unverified
$60.46
$60.46/mg
#10
Biocase Innovations
★ 4.6· price unverified
$80.69
$63.04
$63.04/mg
#11
Southern Aminos
★ 4.6· price unverified
$77.23
$63.29
$63.29/mg
#12
Throne
★ 4.7· price unverified
$66.98
$66.98/mg
#13
Renova Peptides
★ 4.6· price unverified
$66.99
$66.99/mg
#14
Ion Peptide
★ 4.6· price unverified
$67.55
$67.55/mg
#15
EZ Peptides
★ 4.7· price unverified
$67.72
$67.72/mg
#16
Glow Aminos
★ 4.5· price unverified
$69.18
$69.18/mg
#17
RefillPen
★ 4.5· price unverified
$83.59
$71.45
$71.45/mg
#18
FITSKNS
★ 4.6· price unverified
$85.39
$85.39/mg
#19
Solyn Peptides
★ 4.5· price unverified
$111.15
$88.70
$88.70/mg
#20
Peptira
★ 4.6· price unverified
$89.95
$89.95/mg
#21
Nano Blue Labs
★ 4.6· price unverified
$112.08
$90.00
$90.00/mg
#22
Good Labs
★ 4.7· price unverified
$113.77
$90.52
$90.52/mg
#23
Valor Peptides
★ 4.8· price unverified
$92.89
$92.89/mg
#24
Peptidology
★ 4.8· price unverified
$93.33
$93.33/mg
#25
RetaOneLabs
★ 4.7· price unverified
$129.04
$97.64
$97.64/mg
#26
Modified Aminos
★ 4.5· price unverified
$102.05
$102.05/mg
#27
Solution Peptides
★ 4.6· price unverified
$140.32
$107.54
$107.54/mg
#28
One Day Compounds
★ 4.6· price unverified
$127.82
$109.80
$109.80/mg
#29
Felix Chemical Supply
★ 4.5· price unverified
$77.26
$77.26/mg
#30
Modern Research Peptides
★ 4.8· price unverified
$104.78
$104.78/mg
🏆Our pick for IGF-1 LR3
Double R Labs
1mg · USA · Card / Crypto
- ✓Third-party tested (Third-party)
- ✓COAs provided — Per-batch
- ✓Within 15% of cheapest, higher verification tier
- ✓4.7★ community rating
Also solid
/ research index
The research base
Research Maturity
★★★★☆
4/5 — Volume of studies
Evidence Strength
★★★★☆
4/5 — Quality of evidence
Extensively studied. Direct receptor activation downstream of GH.
/ mechanism of action
How it works
IGF-1 receptor agonist. Direct anabolic and proliferative signaling.
/ research dosing
Common research protocols
Range
20-50 mcg/day (research range; can go up to 100mcg)
Frequency
Once daily, AM
Route
Subcutaneous
Cycle
4 weeks on, 4+ weeks off (max 6 weeks continuous)
Research notes
Very potent IGF-1 analog with longer half-life (LR3 = Long R3). Risk of hypoglycemia — monitor blood sugar. Watch for tissue hyperplasia at high doses. Short cycles only. Should not be combined with insulin or other hypoglycemic agents.
References
FOR RESEARCH USE ONLY. Doses listed are compiled from published research literature, FDA-approved drug labels, and well-documented research community practice. Not medical advice.
/ standalone use
As a solo compound
Powerful standalone. Direct receptor activation.
/ side effects
What to know
Hypoglycemia possible. Generally well-tolerated at research doses.
/ timeline
Realistic expectations
1-2 weeks
FOR RESEARCH USE ONLY. IGF-1 LR3 is intended for laboratory research and not for human consumption.