Imitating its action, many beneficial effects are achieved, the most important ones are muscle growth and strength, fat loss, rapid recovery, tissue regeneration, and improved cognition
Results When intracellular glutathione levels are restored, some patients report improvements in energy, mental clarity, and immune resilience

Neurological symptoms are particularly characteristic and may include: Paraesthesia (pins and needles) in the hands and feet Numbness or altered sensation in the extremities Difficulty with balance and coordination, often due to spinal cord involvement (subacute combined degeneration) Memory problems and cognitive impairment Mood changes, including depression and irritability Visual disturbances (rare and usually in advanced deficiency) Haematological manifestations commonly present as symptoms of anaemia: Persistent fatigue and weakness Breathlessness, particularly on exertion Palpitations or rapid heartbeat Pale or jaundiced (yellowish) skin Glossitis (sore, red tongue) Mouth ulcers Additional signs may include: Unexplained weight loss Diarrhoea or constipation Loss of appetite Muscle weakness The severity and combination of symptoms vary considerably between individuals
2003, 32: S48-50
When to See a Doctor Medical attention is required if: You develop a fever of unknown origin after an injection
It fights oxidative stress and can improve skin clarity