IGF-1 LR3 - Dragon Pharma

Buy IGF-1 LR3 1 mg by Dragon Pharma at XSteroids. IGF-1 LR3 is the engineered version of insulin-like growth factor 1: two structural changes turn a short-lived hormone into a compound that resists the proteins that normally clear it. Dragon Pharma supplies it as a 1 mg lyophilized vial. This guide covers the structure, the pharmacology, igf-1 lr3 dosage practice and what is missing from the human data.

IGF-1 LR3 has no approval anywhere and no clinical trials in humans, so the information below is educational only.

About IGF-1 LR3 by Dragon Pharma

Long arginine 3-IGF-1, usually written IGF-1 LR3 or LR3-IGF-1, is a synthetic protein and a lengthened analogue of human IGF-1. Two changes define it: an arginine replaces the glutamic acid at position three, which is the arginine 3 part of the name, and it carries 13 extra amino acids at the N-terminus - the long part - giving 83 amino acids against the 70 of native IGF-1.

Those edits are what make the molecule behave so differently from the hormone it mimics.

How IGF-1 LR3 Works

Why the Modifications Matter

Native IGF-1 spends most of its time bound to IGF-binding proteins, which control how much is free to act and how fast it clears. IGF-1 LR3 has very low affinity for those binding proteins, and that single property changes everything: more free peptide, better metabolic stability, and a much longer window of activity.

Potency and Duration

The literature describes LR3 as approximately three times more potent than IGF-1, with a half-life of about 20 to 30 hours against 12 to 15 hours for IGF-1. The drug infobox for the same compound lists 56 to 72 hours, so published figures are not consistent - a reminder that LR3 is a research reagent rather than a characterised medicine. It remains an agonist at the IGF-1 receptor, which is the mechanism behind the interest in it.

IGF-1 LR3 Dosage and Handling

Dosing

There is no approved dose. Because the compound is potent and long-acting, research practice works in micrograms, and the arithmetic starts from a 1 mg vial - a thousand micrograms - so reconstitution volume and syringe units matter more here than with almost anything else in this catalog. Protocols are short by convention, not by evidence.

Reconstitution and Storage

Mix the powder with bacteriostatic water, aiming the stream at the vial wall rather than the powder, then swirl gently instead of shaking. Label the vial with the date, keep it refrigerated, and treat a punctured multi-dose vial as usable for 28 days after the first puncture.

IGF-1 LR3 Side Effects and What Is Known

The class-level fact that matters is glucose. IGF-1 signalling lowers blood glucose, which is why the approved IGF-1 product, mecasermin, carries hypoglycaemia warnings - and why a longer-acting, more potent analogue would be expected to carry at least the same consideration. Beyond that, LR3 has no human safety dataset at all: no trials, no dose-finding, no adverse event reporting. Anyone comparing it with Tesamorelin, an approved prescription medicine, or with CJC-1295 DAC and Sermorelin should note that LR3 sits further from clinical evidence than either.

IGF-1 LR3 vs IGF-1 and IGF-1 DES

The family is worth separating. Native IGF-1 is a short-lived hormone; mecasermin is the approved recombinant form used in severe primary IGF-1 deficiency. IGF-1 LR3 is the long-acting, IGFBP-resistant analogue - the opposite design goal from IGF-1 DES, which is a truncated version built to act faster and more locally. Same receptor, very different kinetics, and only one of the three is a licensed medicine.

Storage Instructions

Store the lyophilized vial in a cool, dry place away from direct light before reconstitution. After mixing with bacteriostatic water, keep the solution refrigerated and use it within the recommended period for peptide solutions. Keep vials out of the reach of children.

Why Buy IGF-1 LR3 from XSteroids?

At XSteroids you buy the Dragon Pharma IGF-1 LR3 vials directly from the brand catalog, with secure checkout, US domestic shipping in 3 to 6 days and international delivery in 12 to 26 days. Browse the full range on the Dragon Pharma brand page to complete your research protocol.