Library / IGF-1 LR3
Mostly lab & animal studies
IGF-1 LR3
Modified insulin-like growth factor 1 · Growth hormone · Long R3 IGF-1
What it is
A modified IGF-1 designed to stay active much longer than the natural hormone. It is widely used as a growth supplement in laboratory cell cultures.
What research covers
Research is mostly in cells and animals. There are no controlled trials in people. (Mecasermin, a different IGF-1 medicine, is approved for a rare growth disorder.)
Reported side effects
- Low blood sugar, which can be dangerous
- Joint pain
- Swelling
- Possible tissue overgrowth with long use
Not suitable for, or talk to a doctor first
- Current or past cancer
- Diabetes
- Diabetic eye disease
- Under 18
Good to know
- Low blood sugar is the main short-term danger.
Legal status
| Australia | Not an approved medicine in Australia. Peptides like this are generally prescription-only (Schedule 4) and need a prescription to import. Check current rules with the TGA. |
|---|---|
| United States | Not FDA-approved. |
| Sport | Prohibited by the World Anti-Doping Agency (WADA) at all times. |
Rules change. Check with the TGA (Australia), your local regulator, or WADA for sport.
General information, not advice. Talk to a qualified healthcare professional before starting, changing or stopping anything.