It also plays an important role in maintaining the intracellular free CoA pool, when excess intra-mitochondrial acyl- groups are present, through the reverse transport of fatty acyl groups as acylcarnitines by the L-carnitine system (Figure 1
Notably, FOXO4-DRI treatment did not cause significant changes in body weight or testis weight, suggesting a targeted effect [1]
(Interesting, isnt it?) In addition to being one superhero of an antioxidant, it is also a tripeptide (a short chain of three amino acids) containing glutamic acid, cystine and glycine
As a pentapeptide, it is subject to the standard limitations of peptide pharmacokinetics: it cannot be taken orally (destroyed by digestive enzymes), and it requires parenteral administration (subcutaneous injection being the most common route in research settings)
They can help some children but carry risks like growth suppression, mood issues, and dependency