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IGF-1 LR3
APEX · VIII

IGF-1 LR3

Long-acting IGF.

From / per milligram
$59.96$60.0/mg · 1MG
Sizes available
1mg
Lab certificate (COA)
Arrives with shipment
Compare 2 suppliers ↓View test certificate →

· Research-grade only · Not for human consumption · 21+ ·

What is it

Long-acting IGF-1. Muscle growth and recovery. Popular in bodybuilding circles.

Mechanism · Long-Arg3 IGF-1. Half-life around 20 hours versus native IGF-1 at about 12 minutes.

Who

Best for. Not for.

Best for

  • Bodybuilding muscle growth (hyperplasia goals).
  • Users on a 4-week-on, 4-week-off cycle.
  • Adjunct to a GH stack (IGF-1 is the endpoint mediator).

Not for

  • Hypoglycemia risk (insulin-like action).
  • Active malignancy or cancer history (proliferation risk).
  • Pregnancy, nursing, or children.
  • Acromegaly or uncontrolled diabetes.
  • Diabetic retinopathy.
What it does

Mechanism, dose, ramp, risk.

Mechanism
IGF-1 analogue with long arginine substitution. Extended half-life.Source · PEPVERA editorial
Target dose
20-50 mcg / day.Source · PEPVERA editorial
Ramp
4-Week cycle, off 4 weeks.Source · PEPVERA editorial
Risks
Hypoglycemia, organ growth at high dose.Source · PEPVERA editorial
Alternatives

Compared to its siblings.

★ Currently viewing

IGF-1 LR3

Long-acting IGF-1. Muscle growth and recovery. Popular in bodybuilding circles.

Pros

  • · ~20 hour half-life means less frequent injection than IGF-1 DES.
  • · Systemic action versus MGF's site-only signal.

Cons

  • · Less site-specific than IGF-1 DES.
  • · Not mechanical-load coupled like MGF.

IGF-1 DES

Short half-life. Site-specific local hyperplasia.

Pros

  • · Strong local action.

Cons

  • · Daily or short-cycle injection.

See IGF-1 DES →

MGF (Mechano Growth Factor)

Mechano splice variant. Exercise-coupled.

Pros

  • · Site repair use.

Cons

  • · Limited human data.

See MGF (Mechano Growth Factor) →

How we verify

COA per supplier

Published, in-house, or shipment-time

Each supplier declares its own HPLC floor and COA policy. The per-supplier verifier appears on the certificate page; refund and shipping terms vary by supplier and are shown on the supplier listing.

→ How we verify suppliers→ Refund policy
MuscleGH
Suppliers

Compare 2 suppliers

SupplierPriceCOAShips
SwissChemsUS$59.96$59.96/mg · 1mgCOA with shipment3 days
Verified PeptidesUS$65$65.00/mg · 1mgSample COA published3 daysOut of stock
❄ COLD-CHAIN · 5–9 DAYS

Direct from foundry. Slower than domestic resellers; consistency is the trade. Insulated packaging, tracked from departure to doorstep. Replacement issued on damage.

Before you begin

Risk

Hypoglycemia, organ growth at high dose. These pass with discipline. They do not pass with bravado.

Source · PEPVERA editorial

Discipline

4-Week cycle, off 4 weeks.

Source · PEPVERA editorial

Wellness

Hydrate. Eat protein. Sleep eight. Hold a dose for at least two weeks before ascending.

Anti-patterns

  • · Do not pair with stimulants late in the day.
  • · Do not break the cycle without a planned taper.
  • · Do not exceed the dose to chase a deeper sleep response.

Crisis

If the ramp triggers severe anxiety, anhedonia, or persistent gastrointestinal disturbance, stop. Resume after two weeks at half the prior dose. The discipline is the slow climb.

Dosing protocol

Week 1–2

20-50 mcg / day.

Initiation

Week 3–4

20-50 mcg / day.

Signal emerges

Week 5–8

20-50 mcg / day.

Hold

Week 9–12

Cycle review

Assess

Reconstitution

Draw 20 units.

0.1 mg = 0.20 mL at 0.50 mg/mL. 10.0 doses per vial.

apex · VIII · SwissChems

IGF-1 LR3 · 1mg