IGF-1LR3 research pen
In stockResearch use only

Muscle & Recovery

IGF-1LR3

IGF-1 LR3 — long-arginine IGF-1 for muscle hyperplasia research.

$141.52$176.90Save 20%
Size

2 pens for complete course · 1 pen lasts ~26 days

1
Suggested research dosage
Dose: 100 μg/week 3 times/week. Units: 10 units, 3 times/week.
Course
3 times per week upto 45 days. Repeat after 2-3 months rest.
  • ✓ ≥99% purity (HPLC)
  • ✓ Batch-matched COA
  • ✓ Cold-chain 2–8°C
  • ✓ Tracked delivery
  • ✓ Tamper-evident
  • ✓ EU + US shipping
Overview

What is IGF-1LR3?

IGF-1 LR3 is an 83-amino-acid analog of IGF-1 with an N-terminal extension that reduces binding to IGFBPs, extending half-life from ~20 minutes to ~20–30 hours and dramatically increasing free bioactivity.

Each PeptidePen is filled in a controlled cleanroom and sealed with tamper-evident packaging. Batch documentation includes identity confirmation, HPLC purity analysis and concentration verification. Strictly for in-vitro research — not for human or veterinary use.

Research library

Go deeper on IGF-1LR3

A full breakdown of mechanism, clinical findings, dosing references and safety signals — for researchers who want the complete picture.

What is IGF‑1 LR3?

IGF‑1 LR3 is a modified version of Insulin-like Growth Factor‑1, engineered to extend its active lifespan by adding 13 amino acids—referred to as “LR3.” This modified peptide is more stable and longer-lasting than natural IGF‑1, making it a popular choice for those looking to harness its benefits. — Structurally akin to the body's IGF‑1, IGF‑1 LR3 binds to specific receptors and activates intracellular signaling pathways. These actions enhance protein synthesis, glucose uptake, and cell division—supporting muscle, bone, and tissue growth and recovery.

Continue reading the full research brief

Key Benefits

● Muscle growth & endurance: Stimulates muscle cells, increases mass and endurance, and speeds up post-workout recovery. — ● Fat loss: Boosts metabolism for improved fat burning. — ● Bone health: Promotes bone density and strength, reducing fracture risk. — ● Immune support: Enhances immune function. — ● Cardiovascular health: May improve heart health and reduce disease risk. — ● Injury recovery: Supports healing after injury or surgery. — ● Mood & stress relief: May boost mood and reduce stress. — ● Sleep quality: Aids restful sleep and helps combat insomnia. — ● Skin health: Promotes collagen and elastin production, improving skin tone.

These benefits highlight why IGF‑1 LR3 is commonly used by athletes and health-conscious individuals.

Clinical Findings

● Muscular dystrophy: Clinical trials show IGF‑1 LR3 significantly enhances quality of life and increases muscle mass and function. — ● Type 2 diabetes: Studies report improved blood-sugar control. — ● Other applications: Research explores its use in cancer therapy and various metabolic conditions.

Dosage & Administration

● Typical dose: 100 µg (10 units) administered three times weekly — ● Application details: One unit equals 10 µg. To administer, set a pen or dial to 10 units and apply to the abdomen or thigh; hold the pen in place for 10 seconds post-application — ● Cycle length: Up to 45 days

Pen contents: — ○ One IGF‑1 LR3 (1 ml) pen (1 mg = 100 units or 1000 µg) lasts about 3 weeks at the standard dose — ○ Unit-to-microgram conversions: — ■ 1 unit = 10 µg — ■ 4 units = 40 µg — ■ 5 units = 50 µg — ■ 6 units = 60 µg — ■ 10 units = 100 µg

Peptide Stacking Options

IGF‑1 LR3 is often combined with other peptides to enhance results:

● GHRP‑6: Boosts natural growth hormone secretion, increasing muscle and tissue growth — ● Follistatin‑344: Controls myostatin, supporting greater muscle gains

These are popular pairings, though other combinations exist for performance and recovery goals.

Side Effects

Common side effects—typically temporary—include: — ● Headaches — ● Muscle aches — ● Mild application-site discomfort

These usually occur with dosage misuse or overuse. Proper adherence to the recommended dosing schedule typically prevents these issues.

Use in Sports

Athletes in bodybuilding, boxing, MMA, and similar sports use IGF‑1 LR3 to enhance performance, recovery, and muscle development. — Note: IGF‑1 LR3 is banned by organizations like WADA. Always verify compliance with relevant sporting regulations before use.

Research highlights

Why researchers choose IGF-1LR3

  • 01

    Promotes muscle hyperplasia (cell number)

  • 02

    Enhances nutrient partitioning

  • 03

    Synergistic with GH protocols

Research protocol

Typical dosing reference

Research dosing: 20–50 mcg SC near target muscle, post-workout.

For in-vitro research design reference only.

Specifications

Specifications

Form

Pre-mixed pen

Purity

≥99% HPLC

Storage

2–8°C

Shipping

Cold-chain

COA

Batch-matched

Reported in research

Known side-effect signals

  • Hypoglycemia risk
  • Injection-site swelling
From order to lab bench

Built for trust at every step

  1. 01

    Place your order

    Select pen size and shipping region at checkout.

  2. 02

    Verify the COA

    Each batch is HPLC-assayed and documented.

  3. 03

    Cold-chain ships

    Insulated, temperature-logged delivery.

  4. 04

    Run your protocol

    Reference dosing and references included.

FAQ

Frequently asked questions

Common questions about IGF-1LR3 and PeptidePen orders.

Is IGF-1LR3 for human use?+

No. All PeptidePen products are strictly for in-vitro laboratory research. Not intended for human or veterinary use.

How is the COA provided?+

Each pen ships with a batch-matched certificate of analysis. A digital copy is also available on request via your order confirmation.

How is shipping handled?+

Orders ship cold-chain (2–8°C) with insulated packaging, ice packs and a temperature log. Tracked delivery in the US and EU.

Can I order in bulk for my lab?+

Yes. Contact our team for institutional pricing, custom concentrations and recurring shipments.

What's your refund policy?+

Damaged or off-spec pens are replaced free of charge. Contact support within 7 days of delivery.

Ready to run IGF-1LR3 in your next study?

Pre-mixed, batch-assayed, cold-chain shipped — order before 2pm for same-day dispatch.

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