What science exists for GHK-Cu is all rather positive (a 2018 analysis of the science concluded the peptides actions appear to be health positive, saying it boosts collagen, improves tissue repair and has powerful cell-protective actions, including multiple anti-cancer and anti-inflammatory actions)
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Those who have had bariatric surgery or other gastrointestinal procedures often have less stomach surface area available for vitamin absorption
The practice's commitment to listening and believing patients ensures concerns are heard and treatment plans align with individual goals and values
Pale or jaundiced skin
Heres a rough guide that some doctors use, though everyones situation is different: Kidney Function and B12 Dosing Considerations: Above 90 (Normal): Standard B12 doses are usually fine, check levels every 6 months 60-89 (Mild decrease): Might consider slightly lower doses, check every 4 months 30-59 (Moderate decrease): Definitely worth discussing lower doses with your doctor, check every 3 months 15-29 (Severe decrease): High doses probably arent a good idea, monthly monitoring Below 15 (Kidney failure): Avoid high doses entirely, close medical supervision Let me share a story that really opened my eyes to this