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Additional Storage Requirements Light protection: GHK-Cu is sensitive to light exposure
Saline solution (0.9% sodium chloride) is sometimes used but has disadvantages
There has also been a suggestion it might help with cognitive performance, such as improved focus and concentration, but clinical trials are needed to confirm this
May require administration by a healthcare professional
Neurological symptoms often develop gradually and may include: Paraesthesia : tingling or 'pins and needles' sensations, typically starting in the feet and hands Numbness : reduced sensation in the extremities, which may affect balance and coordination Burning pain : particularly in the feet, often worse at night Weakness : muscle weakness and difficulty walking Balance problems : unsteady gait and increased fall risk due to proprioceptive impairment Cognitive changes : memory problems, confusion, difficulty concentrating, and mood disturbances Haematological signs may accompany neurological symptoms and include fatigue, weakness, pallor, and shortness of breath due to megaloblastic anaemia
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