In 2023, the International Tennis Integrity Agency (ITIA) dealt Majchrzak a reduced thirteen-month suspension after the organisation accepted that the player had consumed contaminated supplements recommended by Feldman during a meeting in Warsaw
Additionally, exposure to environmental toxins, stress, and certain medical conditions can further deplete glutathione stores in the body

What to stack with it: GHK-Cu pairs well with: BPC-157 : Another peptide now removed from the FDA's Category 2 list, with strong tissue repair and anti-inflammatory properties Minoxidil : Some protocols use GHK-Cu and minoxidil together different mechanisms can be complementary Finasteride/dutasteride (DHT inhibitors) : If androgenetic alopecia is driven by DHT, adding a DHT blocker alongside GHK-Cu addresses both the hormonal driver and the follicular environment --- Who Should Consider GHK-Cu for Hair Loss GHK-Cu is worth considering if: Minoxidil hasn't delivered the results you expected or you're dealing with scalp irritation You want a hair treatment with broader anti-aging mechanisms rather than a single-target compound You're already using peptides for body composition, healing, or longevity and want to address hair loss within the same framework You prefer working with compounds your body already produces rather than synthetic molecules It's not a magic fix

Apply an ice cube wrapped in a thin cloth, remove it, quickly clean with alcohol, let the alcohol dry, and inject
PLoS Genet 15:e1008396
Nasal administration studies provide baseline data, but injectable routes may have different detection characteristics