This is one of the most common unexpected findings for patients who started GHK-Cu primarily for skin
Peptides are not a shortcut
191 In one randomized controlled trial that included 175 men with infertility, taking a supplement providing 1 gram L-carnitine and 0.5 grams acetyl-L-carnitine, as well as 725 mg fumarate, 1 gram fructose, 50 mg citric acid, 10 mg zinc, 20 mg CoQ10, 50 mcg selenium, 90 mg vitamin C, 200 mcg folic acid, and 1.5 mcg B12, twice daily improved sperm motility, semen volume, and DNA fragmentation compared with placebo after six months
Despite the common perception of natural products as harmless, thorough toxicological assessments are often lacking
You'll want to steer clear of anything that has a heavy fragrance or an abrasive texture