Facebook Instagram X-twitter Linkedin

IGF-1LR3 (0.1mg)

Table of Contents

  • Quickstart Highlights

IGF-1 LR3 (0.1mg) protocols focus on this long-acting synthetic analog of Insulin-like Growth Factor-1 (IGF-1), designed with an extended half-life to enhance biological activity. It is studied for its potential role in supporting muscle hypertrophy, recovery, nutrient utilization, and cellular growth signaling. This guide outlines a subcutaneous administration approach optimized for the 0.1 mg (100 mcg) vial format.

  • Reconstitute: Add 1.0 mL bacteriostatic water → 100 mcg/mL concentration
  • Typical daily range: 20–60 mcg once daily (subcutaneous)
  • Easy measuring: At 100 mcg/mL, 1 unit = 0.01 mL = 1 mcg on a U-100 insulin syringe
  • Storage: Lyophilized: store at −20 °C; after reconstitution, refrigerate at 2–8 °C and use within 2–4 weeks
  • Protocol Overview

Concise summary of the subcutaneous regimen.

  • Goal: Support muscle growth, recovery, and cellular repair signaling
  • Schedule: Once-daily subcutaneous injections, often around training windows
  • Dose Range: 20–60 mcg per day
  • Cycle Length: Commonly used in short cycles with breaks to maintain receptor sensitivity
  • Dosing Protocol

Suggested approach for the 0.1 mg vial format.

  • Start: 20 mcg once daily to assess response
  • Target: 40–60 mcg once daily
  • Frequency: Once per day (subcutaneous)
  • Vial Duration: One 0.1 mg vial lasts approximately 1–5 days, depending on dose
  • Timing: Often used post-workout or in proximity to nutrient intake for anabolic signaling support
  • Mechanism of Action

IGF-1 LR3 (Long R3 IGF-1) is a modified form of IGF-1 with reduced binding affinity to IGF-binding proteins (IGFBPs), which increases its bioavailability and prolongs activity in circulation compared to native IGF-1.

It binds to the IGF-1 receptor (IGF-1R), activating intracellular signaling pathways such as PI3K-AKT and MAPK. These pathways are associated with increased protein synthesis, muscle cell growth, and reduced protein breakdown. Due to its extended half-life, IGF-1 LR3 provides sustained receptor activation, which may enhance anabolic and recovery-related processes in muscle and connective tissues.

  • Potential Benefits & Side Effects

Observations based on preclinical and research literature.

Potential Benefits:

  • May support muscle hypertrophy and lean tissue growth
  • May enhance recovery from training and physical stress
  • May improve nutrient uptake and cellular repair signaling
  • May support tissue regeneration in research models

Possible Side Effects:

  • Potential hypoglycemia-like symptoms (e.g., fatigue, dizziness)
  • Water retention or mild swelling
  • Injection-site irritation
  • Possible insulin sensitivity changes with prolonged use
  • Long-term human safety data are limited; it remains investigational