What it is
IGF-1 LR3 is a synthetic peptide analogue of Insulin-like Growth Factor 1, designed for extended biological activity. It is formulated to target joint and musculoskeletal tissues.
Supplement · Peptide
IGF-1 LR3
10 mg · vegan · gluten-free · 30 caps
joint stiffnessmuscle-weaknessjoint pain jointmusclebone
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How it works
IGF-1 LR3 binds to IGF-1 receptors, promoting cellular uptake of nutrients and stimulating protein synthesis in muscle and cartilage cells. Its prolonged half-life allows for sustained signaling, aiding tissue repair and growth.
Who should take it
Adults looking to address joint stiffness, muscle weakness, joint pain. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
How long does it take to see results?
For joint comfort, effects are typically measurable within 4 to 12 weeks of consistent daily use.
Is IGF-1 LR3 safe for long-term use?
As a research-only peptide, long-term safety data in humans is limited. Use should be guided by a healthcare professional.
Can IGF-1 LR3 be combined with other supplements?
IGF-1 LR3 can be layered into a protocol, but consultation with a clinician is advised, especially if taking medications affecting similar pathways.
Research
6 studies · 2010–2024
Evidence grade
ABCD
C · C · emerging-to-moderate human evidence for joint and musculoskeletal health
From the blog
Editorial notes
SacredBod's longer take on IGF-1 LR3 — context the structured blocks above don't capture.
About IGF-1 LR3
IGF-1 LR3 is a peptide supplement used to support joint and musculoskeletal health. Long-acting IGF-1 analogue (research-only). It is available in capsule form and dosed for adults in India and internationally. As a peptide-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol. IGF-1 LR3 works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the joints, muscles, bones, and effects are dose-dependent, typically becoming measurable within 4-12 weeks for joint comfort. Consistency matters more than dose size for this category.
Evidence
IGF-1 LR3 carries an evidence grade of C in the SacredBod catalog, reflecting emerging human evidence for joint and musculoskeletal health. Long-acting IGF-1 analogue (research-only). Benefits are cumulative rather than immediate, typically becoming noticeable within 4-12 weeks for joint comfort, and individual response varies.
Dosing
A typical dose is 10 mg, taken with food, usually in the morning. Start at the lower end, assess tolerance, and stay consistent; more is not automatically better.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
Who it’s for
Adults looking to address joint stiffness, muscle weakness, joint pain. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
As part of the Peptide category, IGF-1 LR3 can be used on its own or layered into a broader protocol — see the Goes with panel for evidence-aligned pairings.
Added to your stack.