Where to Buy Receptor Grade IGF-1 LR3: Vendor Comparison, Benefits & Side Effects

8 vendors in our directory currently list Receptor Grade IGF-1 LR3. The comparison shows each vendor's third-party testing status, COA availability, editorial and community ratings, and any active coupon — ordered by our directory ranking.

Vendors carrying Receptor Grade IGF-1 LR3, ordered by directory rank and editorial rating

Vendor	Trust signals	Editorial rating	User reviews	Coupon	Visit vendor
1 Modern Aminos Ships from USA	Tested COA	4.9Rated 4.9 out of 5	No user reviews	—	Visit site
2 Core Peptides Ships from USA	Tested COA	4.8Rated 4.8 out of 5	No user reviews	—	Visit site
3 TruLab Peptides Ships from USA	Tested COA Guarantee	4.5Rated 4.5 out of 5	No user reviews	—	Visit site
4 Raw Amino Ships from USA	Tested COA	4.4Rated 4.4 out of 5	No user reviews	—	Visit site
5 GENX Peptides Ships from USA	Tested	4.3Rated 4.3 out of 5	No user reviews	—	Visit site
6 Blue Sky Peptide Ships from USA	Tested COA	3.1Rated 3.1 out of 5	No user reviews	—	Visit site
7 Peptides UK Ships from UK	Tested COA	2.8Rated 2.8 out of 5	No user reviews	—	Visit site
8 Research Chemical Ships from USA	Tested COA	Not yet rated	No user reviews	—	Visit site

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Cited studies

1. 1IGF-I analogs with reduced IGF-binding protein affinity: Potent actions in muscle cells
2. 2Long R3 IGF-I: A potent analog for studying IGF actions in cell culture

Research on Receptor Grade IGF-1 LR3 has focused on the following areas:

• Long‑acting IGF‑1 analog researched for potent stimulation of muscle protein synthesis
• May enhance muscle hypertrophy, recovery, and connective‑tissue repair
• Investigated for improved nutrient partitioning and reduction of muscle wasting

Adverse reactions and limitations documented for Receptor Grade IGF-1 LR3 include:

• Hypoglycemia risk
• Water retention