IGF-1 LR3

Brand: Ultra Labs
Category: Muscle, Repair & Recovery
Format: 1 mg lyophilized vial (reconstituted for injection)
Administration: Subcutaneous or intramuscular injection

Overview

IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a recombinant analog of IGF-1 engineered for enhanced potency and extended half-life. By binding to IGF-1 receptors, it stimulates protein synthesis, cell proliferation, and tissue repair—making it a valuable tool in muscle growth, recovery, and regenerative research.

Peptide Profile

• Peptide Name: IGF-1 LR3

• Main Function: Enhances muscle growth and accelerates recovery

• Mechanism of Action: Binds IGF-1 receptors → stimulates protein synthesis and cellular proliferation

Key Features & Benefits

• Promotes muscle hypertrophy and strength

• Accelerates recovery from muscle damage

• Enhances fat metabolism

• Supports tendon and ligament repair

• Boosts overall anabolic activity

Effects on Health Parameters

Dosage & Administration

• Reconstitution Cheat Sheet

  (1 mg vial → 2 mL bacteriostatic water)

  • Final concentration: 0.5 mg/mL = 500 mcg/mL

  • 1 unit (0.01 mL on a U100 syringe) = 5 mcg

  Target Dose	Amount (mg)	Insulin Syringe (U100)
  20 mcg	0.02 mg	4 units on a syringe
  50 mcg	0.05 mg	10 units on a syringe
  100 mcg	0.10 mg	20 units on a syringe

   

   

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  Common Dosages (Research Use Only)

  • Injectable: 20–50 mcg daily

  • Administration: Post-workout or in the morning

  • Note: Avoid dosing close to meals due to insulin sensitivity

     

  • ⚠️ Note: For laboratory research only. Not approved for human or veterinary use.

   

Cycle Length

• On-Cycle: 4–6 weeks

• Off-Cycle: 2–4 weeks

• Tapering: Not required

• Why Cycle?: Prevents receptor desensitization, optimizes cost, and maintains responsiveness

Clinical Insights

• IGF-1 LR3 directly activates IGF-1 receptors, stimulating muscle hypertrophy and repair

• Research demonstrates efficacy in growth and recovery at 20–100 mcg doses

• Often combined with GHRH peptides (e.g., CJC-1295) for synergistic GH–IGF-1 activity

Possible Side Effects

• Mild injection site irritation

• Temporary hypoglycemia (if not fasted)

• Joint pain (rare)

FAQs

Is 20 mcg enough? Yes, suitable as a starting dose; may increase to 50–100 mcg if required.
Can it be taken long-term? Cycling recommended to avoid receptor desensitization.
Does it affect hormones? Primarily stimulates the IGF-1 pathway with minimal systemic disruption.
When are results noticeable? Muscle growth and recovery benefits may begin within weeks.

Conclusion

IGF-1 LR3 is a potent anabolic peptide designed for enhanced muscle growth, recovery, and tissue repair. Its extended half-life and powerful receptor activation make it a valuable research tool in sports science, regenerative medicine, and metabolic health studies.