The peptide is created by the inclusion of 13 amino acids to the N-terminus of native IGF-1 and by replacing the glutamic acid at position 3 with arginine, which ultimately leads to the formation of an 83 amino acid peptide
Boslett, J., Reddy, N., Alzarie, Y
Documented Long-Term Side Effects of Opioids Chronic or recurrent opioid use has been associated with: Central nervous system suppression , affecting alertness, coordination, and mood (35,36) Disrupted gut motility and microbiome balance , contributing to constipation, dysbiosis, and inflammation (38) Hormonal suppression , including reduced testosterone, altered HPA-axis signaling, and downstream endocrine disruption, which can worsen fatigue, depression, and pain perception (34) Impaired immune function , increasing susceptibility to infection (37) Reduced motivation and physical activity , slowing rehabilitation and tissue recovery (35) Why Opioids May Worsen Chronic Pain Over Time Because opioids suppress pain perception without addressing inflammatory, structural, or metabolic drivers, symptoms often return when doses declinefrequently with heightened sensitivity due to opioid-induced hyperalgesia

Additional tests may include full blood count (looking for macrocytic anaemia), methylmalonic acid, and homocysteine levels
This allows for more frequent, high-quality training sessions and reduces the risk of overtraining