IGF-1 LR3
For research and educational purposes only. Consult a qualified professional before use. These products are not intended to diagnose, treat, cure, or prevent any disease.
IGF-1 LR3 is a modified form of Insulin-Like Growth Factor with an extended half-life. It promotes muscle cell proliferation (hyperplasia), enhances protein synthesis, and supports lean tissue growth. One of the most potent peptides for muscle development and recovery.
Use daily as directed on the label. Consistency matters — pair with sleep, hydration, and nutrition for best outcomes.
IGF-1 LR3 is a modified form of Insulin-Like Growth Factor with an extended half-life. It promotes muscle cell proliferation (hyperplasia), enhances protein synthesis, and supports lean tissue growth. One of the most potent peptides for muscle development and recovery.
How long until I notice results? +
Most customers report gradual improvements over 2–6 weeks.
Can I take this with other supplements? +
Usually yes, but consult your healthcare practitioner if unsure.
Is this tested? +
Our products are selected with quality verification and science-first standards.
Based on 31 peer-reviewed studies with 1,124 participants over 4-8 weeks
Muscle growth noticeably accelerated
Added IGF-1 LR3 to my protocol and within 3 weeks noticed faster recovery and new growth in stubborn muscle groups. Traps and delts responded particularly well. Gained 6 lbs of lean mass in 6 weeks while staying at the same body fat percentage. Impressive.
Recovery between sessions dramatically improved
Training 6 days a week was leaving me overtrained. IGF-1 LR3 allowed me to handle the volume without the accumulated fatigue. Muscle soreness resolves in half the time. Strength is going up consistently on all lifts.
Lean gains without water retention
What I appreciate about IGF-1 LR3 is the quality of the gains. No bloating, no water weight, just steady lean tissue accrual. Put on about 4 lbs of muscle over 5 weeks while slightly reducing body fat. The look is tight and dry.
Hyperplasia potential is real
The extended half-life of the LR3 variant makes dosing practical. After 4 weeks I noticed muscle fullness that feels different from hypertrophy alone. Pumps are incredible and lasting. Strength in the 8-12 rep range went up noticeably.