is ghk cu peptide safe “Is GHK-Cu actually worth it?” genuinely one of the most common questions in my comments, so let me finally answer it properly., The short version: copper peptides have real research behind them, Is GHK-Cu Safe? | GHK-Cu

The problem is that many critical peptide levels decline as you age

doi:10.1111/1556-4029.14447

Deficiencies in vitamins such as vitamin B12 and folate can impair red blood cell production and lead to anemia

Risks and Side Effects While generally safe, vitamin B12 injections can have side effects or risks, such as: Mild pain, swelling, or redness at the injection site Dizziness, headache, or nausea Allergic reactions (rare) Hypokalemia (low potassium levels) in individuals with severe deficiency undergoing treatment People with allergies to cobalt or who have Lebers disease should avoid B12 injections unless specifically advised by a doctor