[4] Reported side effects in human users, primarily from observational reports and clinical anecdote rather than controlled studies, include mild nausea, dizziness, and injection site irritation

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
Can glutathione cause side effects
The immune system evolved to discriminate infectious non-self from non-infectious self
doi: 10.1002/14651858.CD005195.pub4 387
Lets start with: What is glutathione