(Native, unmodified recombinant human IGF-1, sold as mecasermin/Increlex, is FDA-approved only for a narrow pediatric growth-failure indication and is chemically distinct from the LR3 analog.) In the US it is manufactured and sold almost exclusively as an unregulated "research chemical" labeled "not for human consumption," a labeling practice peptide vendors use to avoid marketing it as an unapproved drug
However, the absence of adverse effects in animal studies does not guarantee safety in humans
Frequently Asked Questions Glossary References Petrovic I, et al
17 Parry-Strong, A., Langdana, F., Haeusler, S., Weatherall, M
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