IGF-1 LR3
Long R3 IGF-1
A synthetic long-acting analog of insulin-like growth factor 1 with reduced binding to IGF-binding proteins, used as a research reagent. It acts as an IGF-1 receptor agonist, activating anabolic PI3K/Akt and MAPK signaling. Not approved for human use.
Tracking and educational reference only, on values you enter or import yourself. Not medical advice or a dosing recommendation.
Regulatory status
Research only
This substance is sold and handled as a research material and is not approved for human use. There is no approved label, which means there is no agency-reviewed information about how it should be handled, who should avoid it, or what happens alongside other medicines.
Not approved for human use
A regulatory status describes paperwork, not safety. An approved compound can still be wrong for a given person, and an unapproved one is neither thereby dangerous nor thereby fine.
Half-life
~20-30 h reported (subcutaneous); some sources cite longer. Half-life is an educational pharmacology figure, drawn from public sources, and is not a schedule or dosing instruction.
Storage & handling
Lyophilized powder kept frozen or refrigerated and protected from light; reconstituted solutions refrigerated, used within a limited window.
References
- Francis et al. (Long-R3-IGF-I characterization)
Common questions
IGF-1 LR3, answered plainly.
01What is IGF-1 LR3?+
A synthetic long-acting analog of insulin-like growth factor 1 with reduced binding to IGF-binding proteins, used as a research reagent. It acts as an IGF-1 receptor agonist, activating anabolic PI3K/Akt and MAPK signaling. Not approved for human use. It is also referred to as Long R3 IGF-1. It is listed here under Cognitive / Longevity as educational reference, which is not a recommendation to use it.
02Is IGF-1 LR3 FDA approved?+
Research only. This substance is sold and handled as a research material and is not approved for human use. There is no approved label, which means there is no agency-reviewed information about how it should be handled, who should avoid it, or what happens alongside other medicines.
03What is the half-life of IGF-1 LR3?+
~20-30 h reported (subcutaneous); some sources cite longer. A half-life is an educational pharmacology figure describing how long the body takes to clear half of a substance. It is not a schedule and does not imply one.
04How is IGF-1 LR3 stored and handled?+
Lyophilized powder kept frozen or refrigerated and protected from light; reconstituted solutions refrigerated, used within a limited window. Storage conditions come from a manufacturer's own label where one exists, and a compound with no approved label has no agency-reviewed handling instructions at all.
05What vial strengths of IGF-1 LR3 are commonly sold?+
Commonly listed vial strengths are 0.1, 1 mg. A vial strength is a market fact about how a product is packaged. It is not a dose, and it says nothing about how much of anything belongs in any person.
Related in Cognitive / Longevity
Educational reference only, compiled from public sources. Not medical advice, diagnosis, treatment, or a dosing recommendation, and not a recommendation to use any compound. Many compounds listed are research materials not approved for human use. Consult a qualified professional.