IGF-1 LR3
Also known as: Long R3 IGF-1, IGF-1 Long R3
IGF-1 LR3 is a catalog-expanded peptide entry in ProtoComp's source-backed compound corpus. It is included for search, calculator math, stack awareness, and future research curation based on expand compound catalog, local_seed. Published dosing, cycle length, and clinical-use claims are intentionally left null until compound-specific evidence is reviewed.
Beginners 20-40 mcg. Female athletes 20-40 mcg. 5 days on / 2 off common.
4-6 weeks standard, max 8 weeks. Desensitization with prolonged use.
Off-cycle: 4 weeks
Always pair with carbs post-workout (hypoglycemia risk)
Contraindications
- • Cancer history (cell proliferation)
- • Diabetes (glucose)
- • Under 18
Common side effects
- • Injection site inflammation
- • Water retention
Serious risks
- • Hypoglycemia (primary risk)
- • Receptor desensitization
- • Gut growth at high doses
- • Insulin resistance with chronic use
Requires monitoring
- • Blood glucose
- • IGF-1 levels
Pregnancy / breastfeeding
No data — consult clinician
Male
Standard dose 40-100 mcg/day
Female
Lower dose 20-40 mcg/day. No virilization. No androgenic/estrogenic effects.
- Promotes hyperplasia (new muscle fibers), not just hypertrophy
- Monitor blood glucose closely when stacking with other GH-elevating compounds
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