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GHK-Cu provides foundational regenerative benefits, while other therapies add targeted effects

Gastrointestinal symptoms (more common with oral preparations): Mild nausea or upset stomach Diarrhoea (typically with very high doses) Other effects: Headache, particularly when treatment is first initiated Dizziness or light-headedness Skin reactions such as mild rash or itching Temporary reddish discolouration of urine (chromaturia) after hydroxocobalamin injections, which is harmless It is important to note that many symptoms attributed to B12 supplementation may actually represent the body's response to correcting a deficiency

Each time a somatic cell divides, telomeres shorten slightly, and this shortening is considered one of several hallmarks of cellular aging

10.1104/pp.009886 54 GongQ.YangZ.ChenE.SunG.HeS.ButtH