Early on, I noticed Slightly improved pumps
Mild increase in muscle fullness
Recovery may have improved slightly, but nothing dramatic.
At maintenance calories, I did not observe significant recomposition effects. No...
I wanted to test IGF-1 LR3 primarily for recovery, muscle fullness, and potential recomposition benefits while running only TRT (150 mg/week).
The goal was to see whether it would provide noticeable anabolic or nutrient partitioning effects without increasing androgen load.
How did you use this product?
Started at 20 mcg daily.
Increased to 40 mcg daily.
Later reduced back to 20 mcg before discontinuing.
Used consistently, injected daily.
Total duration of use
Several weeks (enough to assess response at both 20 mcg and 40 mcg).
Did you stack it with other compounds?
Yes.
TRT: 150 mg Testosterone Enanthate per week
Retatrutide (temporarily paused to better evaluate IGF effects)
No additional anabolic compounds were used during the evaluation period.
Results & effectiveness
What changes did you notice while using this product?
Early on, I noticed Slightly improved pumps
Mild increase in muscle fullness
Recovery may have improved slightly, but nothing dramatic.
At maintenance calories, I did not observe significant recomposition effects. No noticeable increase in strength beyond normal training progression.
At 40 mcg, effects did not scale proportionally compared to 20 mcg.
How soon did you start noticing effects?
Minor pump and fullness changes within the first 1–2 weeks. No major visual or performance changes beyond that.
How did the results compare to your expectations?
Results were underwhelming compared to expectations. I expected stronger recomposition or recovery effects, especially at 40 mcg. In practice, the benefits felt mild and not transformative
Side effects & tolerance
Did you experience any side effects or negative changes?
Yes.
Episodes of lethargy
Occasional mild hypoglycemia-like feelings
Slight brain fog at higher dose
Nothing severe, but enough to question cost-benefit ratio.
Injection pain / discomfort (if applicable)
Little rednes on injection site
Overall tolerance
Moderate.
While tolerable, the subjective side effects combined with limited upside led me to discontinue use.
Final thoughts
Would you use this product again? Why or why not?
Unlikely. Given the cost, mild effects, and side effects experienced, it did not justify continued use in my situation.
Would you recommend this product to others?
Only to advanced users who understand what they’re testing and are already optimized in training, nutrition, and hormonal base.
For most people, optimizing calories, sleep, insulin sensitivity, and androgens will likely give a far better return.