Common, usually mild: Injection-site reactions (redness, swelling, itching), most frequent with both Mild headache, dizziness, or flushing after injection Initial water retention as IGF-1 rises Transient fatigue in the first 12 weeks Less common, dose-dependent: Carpal tunnel-like wrist symptoms (sign IGF-1 may be too high) Joint discomfort or stiffness Numbness or tingling in extremities Elevated blood glucose (GH antagonizes insulin) The monitoring that matters:IGF-1 (insulin-like growth factor 1, the downstream marker of GH activity) is the lab value that tells you whether youre in a therapeutic range or pushing past it
The best experiences have been with the S-acetyl-l-glutathione form
However, the content carnitine in skeletal muscle, phosphocreatine, ATP, glycogen, and lactate, as well as measures of physical performance during exercise were equivalent between vegetarians and omnivores
The clinical utility of conventional copper chelators is limited by dose-dependent toxicities, primarily stemming from systemic copper deficiency and off-target chelation of essential metals, such as zinc and iron