IGF-1 LR3
An engineered IGF-1 that escapes its binding proteins, so it is far stronger and lasts about a day.
Not approved (mecasermin, plain IGF-1, is approved for children’s growth failure).
Used for
- Muscle growth
- Recovery
How it works
Activates the IGF-1 receptor directly: muscle protein building, glucose uptake and cell growth.
What the research shows
- Studied in cell culture and farm animals; no human trials.
Dosing
Dosing isn’t listed on the public site. In the app, each published option is shown with its source (a drug label, a clinical guideline, a trial or community reports) and can be turned into a protocol you review.
Work out the units to draw for your vial →Side effects
- Low blood sugar, sometimes severe
- Jaw and joint aches
Cautions
- Can cause dangerous hypoglycemia: never inject without having eaten.
- Strong growth signal: avoid with cancer or a history of it.
- Prohibited in tested sports (WADA).
- Research-chemical vials have no quality control: purity, dose and sterility vary. Third-party testing helps but is no guarantee.
Storage
Unmixed powder: freezer or fridge, away from light.
Once mixed with bacteriostatic water: fridge; the common rule is to use it within 28 days.
There is no label or published stability data for this one, so treat these as habits, not limits.
Stability once mixed
A protein, usually mixed in dilute acetic acid, which helps. Plain IGF-1 (Increlex) is labelled 30 days once opened; LR3 itself has no label.
Heat, shaking, freezing a mixed vial, light and many needle punctures all speed breakdown. Toss it if it turns cloudy, grows specks or changes color.
More in Muscle
Reference only, not medical advice. Written for this app from the cited research. Doses marked community-reported are not from trials.