Skip to content

Where to Buy Receptor Grade IGF-1 LR3: Vendor Comparison, Benefits & Side Effects

A high-purity growth factor studied for receptor binding.

Published December 17, 20255 vendors listed2 cited studies

What is Receptor Grade IGF-1 LR3?

Receptor Grade IGF-1 LR3 is a modified insulin-like growth factor researched for its anabolic and regenerative properties.

Where to Buy Receptor Grade IGF-1 LR3 Online

5 vendors in our directory currently list Receptor Grade IGF-1 LR3 — 5 online stores and 0 wholesale suppliers. Stores sell by the vial with a price you can check; wholesale suppliers quote per gram on enquiry. Featured vendors paid for their placement; ratings and trust signals are never for sale.

Vendors carrying Receptor Grade IGF-1 LR3, ordered by directory rank and editorial rating
VendorTrust signalsReputation scoreUser reviewsCouponVisit vendor
1
Biotech Peptides

Ships from USA

  • Tested
  • COA
  • Guarantee
4.9Rated 4.9 out of 5No user reviewsVisit site
2
Core Peptides

Ships from USA

  • Tested
  • COA
4.8Rated 4.8 out of 5No user reviewsVisit site
3
Raw Amino

Ships from USA

  • Tested
  • COA
4.4Rated 4.4 out of 5No user reviewsVisit site
Not yet ratedNo user reviewsVisit site
Not yet ratedNo user reviewsVisit site

Compare all Receptor Grade IGF-1 LR3 prices per mg →

Some outbound links are affiliate links: purchases made through them may earn PeptidesFinder a commission at no extra cost to you.

Mechanism of Action

It binds to IGF-1 receptors with extended activity, activating PI3K-AKT and MAPK signaling pathways.

Clinical Research

Cited studies

  1. 1IGF-I analogs with reduced IGF-binding protein affinity: Potent actions in muscle cells
  2. 2Long R3 IGF-I: A potent analog for studying IGF actions in cell culture

Researched Benefits

Research on Receptor Grade IGF-1 LR3 has focused on the following areas:

  • Long‑acting IGF‑1 analog researched for potent stimulation of muscle protein synthesis
  • May enhance muscle hypertrophy, recovery, and connective‑tissue repair
  • Investigated for improved nutrient partitioning and reduction of muscle wasting

Side Effects & Safety

Adverse reactions and limitations documented for Receptor Grade IGF-1 LR3 include:

  • Hypoglycemia risk
  • Water retention

Guides on Receptor Grade IGF-1 LR3

Research summaries and buying guidance from our editorial team.

Peptide Science 101

PEG-MGF: Repairing Muscle Tissue Post-Workout

Discover how PEG-MGF repairs muscle tissue after training by activating satellite cells. Complete research guide covering mechanism and benefits for 2026.

Read article

Related Peptides

Other peptides researched in muscle recovery, weight loss.

1G-SGT

  • Weight Loss

A first-generation metabolic signaling peptide researched for body-composition support.

  • Weight Loss
Read the guide

2G-TZ

  • Weight Loss

A second-generation metabolic peptide studied for enhanced weight-management effects.

  • Weight Loss
Read the guide

3G-RT

  • Weight Loss

A third-generation metabolic peptide candidate investigated for robust obesity support.

  • Weight Loss
Read the guide

5-Amino-1MQ

  • Weight Loss
  • Anti-Aging
  • +1

A metabolic modulator studied for fat metabolism.

  • Weight Loss
  • Anti-Aging
  • Gut Health
Read the guide