The "right" dose sits in a narrow window that depends on: Delivery method - injectable GHK-Cu vs topical GHK-Cu vs oral/sublingual GHK-Cu Goal - skin rejuvenation , hair and scalp support, wound healing , general anti-ageing Individual factors - age , skin type , baseline GHK levels , other peptides being stacked Natural plasma GHK falls from roughly 200 ng/ml at age 20 to around 80 ng/ml by age 60
A 24-year-old with chronic inflammatory problems since infancy, who had tried many treatments, found that within hours of taking .25mg, his hunger and blood pressure had normalized, and his fatigue, brain fog, and inflammatory issues were substantially reduced
How Long Does it Take to See Results from a Glutathione IV Drip
However, sublingual bioavailability for peptides is inherently lower than subcutaneous injection because the oral mucosa presents a significant absorption barrier for large molecules
Williams BL, Hornig M, Buie T, Bauman ML, Cho Paik M, Wick I et al