They are not approved by the FDA for human use outside of clinical trials and are not legally sold as dietary supplements or over-the-counter drugs
Physicians who prescribe unapproved drugs without an Investigational New Drug (IND) application violate federal law and risk medical board sanctions
View at PubMed Falutz J, Allas S, Blot K, et al
By using Western blot, immunofluorescence and other techniques, the expression and distribution of tight junction proteins were analyzed, and the effect of IGF-1 LR3 on barrier integrity was studied
This hypothetical adverse effect, although not clinically reported until now, is analogous to the hypothalamic-pituitary axis suppression seen with long-term use of systemic corticosteroids Exacerbation of Helicobacter pylori associated peptic ulcers: Helicobacter pylori is known to feed on macrophages and neutrophils abundant at the site of inflammation caused by the ulcer