IGF-1 LR3
Long-acting IGF-1 analog
Long-acting IGF-1 that keeps the anabolic signal open for hours.
Also sold as
Research chemical vendors can't legally label products with the real name, so IGF-1 LR3 often appears under coded SKUs. If you're shopping and see any of these, it's the same compound:
- LR3
- IGF LR3
- Long R3 IGF
Codes shown are for identification only.
Your draw
What it actually is
IGF-1 LR3 is an IGF-1 analog with an Arg3 substitution and a 13 amino acid extension that resists binding proteins, extending its half-life dramatically over native IGF-1. It drives hyperplasia and nutrient partitioning systemically.
40mcg post-workout is typical; sensitive users start at 20mcg. Watch blood glucose closely, hypoglycemia is the main acute risk. 4 weeks on, 4 off.
Why people use it
- Growth signal that GH secretagogues alone cannot reach
- Nutrient partitioning and glycogen loading in muscle
- Short, aggressive growth blocks
Educational only · Not a vendor claim
How it works
An IGF-1 analog engineered to resist binding proteins, extending systemic IGF-1 receptor activation for hours.
Health benefits
- Strong anabolic signal
- Nutrient partitioning into muscle
- Glycogen loading
- Supports hyperplasia
What you'll feel
- Pronounced muscle fullness
- Increased hunger
- Occasional low blood sugar sensations
Pros
- Reaches growth signaling GH secretagogues cannot
- Very effective in short blocks
- Low volume dosing
Cons
- Hypoglycemia risk
- Long-term safety concerns around tissue growth
- Requires careful glucose monitoring
Side effects to know
- Hypoglycemia (shakiness, sweating)
- Injection site irritation
- Joint aches
- Headache
Best suited for
Educational summary · Not medical advice · Discuss with a qualified clinician
Typical timeline
General pattern for the Muscle category. Individual response varies.
- Week 1Deeper sleep, vivid dreams, possible morning hand tingling — normal GH-axis signals.
- Weeks 2–4Recovery between sessions improves. Modest fullness in muscles from mild water retention.
- Weeks 4–8Body comp changes become visible. Fat drops slightly, muscle looks fuller. Bloodwork check recommended.
- Weeks 8+Cycle off for at least equal time to restore natural pulsatility. Track IGF-1 if running longer.
The reconstitution math
- 1Reconstitute the 1 mg vial with 1 mL of bacteriostatic water. Tilt — don't shake.
- 2Concentration becomes 1,000 mcg/mL (1 mg/mL).
- 3For a 40 mcg dose, draw 0.040 mL — that's 4 units on a 1 mL insulin syringe.
- 4One vial gives you approximately 25 doses.
Reminder: 100 units on an insulin syringe = 1 mL. Always start at half the listed dose for the first week and rotate injection sites between arms, legs, abdomen, and glutes.
Dose logging is available for signed-in users. Track today's dose and notes for IGF-1 LR3.
Use code ANYPEPTIDES15 for 15% off your order.
Discount may end or change without notice.
Keep going from here
Everything on the site that connects to IGF-1 LR3: comparable compounds, the exact math for this vial, and the tools to run the cycle.
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Tools for this protocol
Prefilled with 1 mg, 1 mL BAC water, and a 40 mcg dose.
Printable units-to-micrograms lookup for every common vial and water volume.
Add IGF-1 LR3 to a protocol with schedule, dosing, and a shopping list.
Log each dose so you can tie effects and side effects to real dates.
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