IGF-1 LR3
Also known as Long R3 IGF-1 · IGF-1 Long Arg3
New
Reconstitution & dosing guide
0.1 mg · 1 mg vial sizes — research phases, recon steps, and a live unit calculator.
Available sizes & price
Catalog only100mcg x 10 vials
IGF-1 LR3 (IG01) · Not in current stock
$20 / vial
1mg x 10 vials
IGF-1 LR3 (IG1) · Not in current stock
$50 / vial
Prices per vial · Research use only · Not medical advice.
Long-acting IGF-1 analog used in bodybuilding research circles for hypertrophy; significant risk profile.
How to picture it
IGF-1 is the downstream growth message GH often works through. LR3 is engineered to last longer and bind less to inhibitory binding proteins, so the growth/repair signal stays available. Picture a longer-lasting IGF megaphone for muscle and tissue research — potent anabolic and recovery pathway engagement, and not a casual tool.
Research focus & benefits
- Sustained IGF-1 pathway research
- Anabolic and recovery model studies
- Reduced binding-protein decoy effects vs native IGF-1
Benefits describe research interest and pathway rationale — not guaranteed outcomes or medical advice. Research use only.
Overview
IGF-1 LR3 is a modified insulin-like growth factor-1 with reduced binding to IGF-binding proteins and an extended half-life. It is powerful, anabolic, and risky — hypoglycemia, organ growth concerns, and theoretical cancer promotion are central issues. Banned in sport.
Mechanism
Activates IGF-1 receptor signaling driving protein synthesis, satellite cell activity, and glucose uptake.
Research uses
- Cell culture growth factor
- Muscle hypertrophy research
- IGF axis pharmacology
Research dosing notes
High-risk compound. Hypoglycemia management knowledge is essential in any clinical research context. Not beginner territory.
Half-life / kinetics
~20–30 hours (much longer than native IGF-1)
Common research routes
Reported considerations
- Hypoglycemia
- Water retention
- Carpal tunnel–like symptoms
- Possible visceral organ growth
- Theoretical oncogenic risk
Contraindications / cautions
- Any cancer history
- Uncontrolled diabetes
- Pregnancy
- Drug-tested athletes
Common research stacks
- PEGs / MGF discussions
- Insulin (extremely dangerous DIY territory)
- GH secretagogues
Legal / access note
Unapproved for bodybuilding; WADA prohibited; research chemical legal gray areas apply.