10.1146/annurev.pa.25.040185.003435 Ann Rev Pharmacol Toxicol
Some studies indicate that it may enhance slow-wave sleep, which is the deepest stage of non-REM sleep essential for the bodys recovery and regeneration processes
As IGF-1 LR3, being a modified and more powerful version of natural IGF-1, reproduces these effects without affecting levels of growth hormone secretion by the pituitary gland itself
The results are inconclusive, but there are some promising results so far: In one small study with just 12 (healthy middle-aged non-smoker) subjects (taking either 500 or 1,000 mg per day liposomal glutathione for four weeks), there was a trend for increasing glutathione levels, although it only became significant in the 500 mg dose after two weeks, which was also the largest increase at 25%
This means it only up-regulates HGH, but not other hormones like cortisol or adrenocorticotropic hormone (ACTH) [11]