There is currently limited scientific evidence that IV infusions provide general health, "wellness", energy, immune, detox or anti-ageing benefits in people who do not have a diagnosed deficiency or medical need, and we cannot guarantee any particular result individual responses vary
Blood levels peak around age 20 at approximately 200 ng/mL and decline to roughly 80 ng/mL by age 60, correlating with diminished skin elasticity and regenerative capacity
[DOI] [PMC free article] [PubMed] [Google Scholar] 177.Kim J., Lee S., Choi B.R., Yang H., Hwang Y., Park J.H.Y., LaFerla F.M., Han J.S., Lee K.W., Kim J
Structural modifications increase its resistance to binding proteins and enzymatic breakdown, allowing it to remain active longer than native IGF-1
Sublingual and nasal preparations are available but less commonly used in NHS practice