The discovery that GHK-Cu binds directly to SIRT1 (Li et al., 2025) has generated particular interest, as SIRT1 is a central regulator of cellular longevity and stress resistance
Symptoms of vitamin B12 deficiency: extreme tiredness a lack of energy pins and needles a sore and red tongue mouth ulcers muscle weakness problems with your vision psychological problems, which can range from mild depression or anxiety to confusion and dementia problems with memory, understanding and judgement Causes of a vitamin B12 deficiency: pernicious anaemia a lack of these vitamins in your diet medicine certain medicines, including anticonvulsants and proton pump inhibitors (PPIs), can affect how much of these vitamins your body absorbs
Lower levels of glutathione can lead to fatigue and decreased energy levels
Copper Peptide Serums with GHK-Cu in Hyaluronic Acid are available at
Many of our patients choose to inject once every 6 weeks however, further lowering the cost (usually the patient will feel when the effects are starting to wear off and choose that point to receive a further injection)
The term 'parfum' or 'fragrance' is not regulated in many countries