A narrative review concluded that the practice is controversial because there are no standardized dosing protocols and nearly onethird of patients report adverse effects, ranging from mild gastrointestinal symptoms to liver dysfunction and lifethreatening allergic reactions
Side Effects and Safety of GHK-Cu Peptide One of the advantages of GHK-Cu is its generally favorable safety profile, especially when used topically at cosmetic concentrations
If the patient is suspected to be sensitive to cobalt or other components of cobalamin, an intradermal test dose is recommended.[12][15] Several laboratory tests should be performed prior to treatment with cyanocobalamin, including serum vitamin B12, folate, iron, hematocrit, and reticulocyte count
Biochemistry 40:1413442, PMID: 11714266 Reynaert NL, van der Vliet A, Guala AS, McGovern T, Hristova M, Pantano C, Heintz NH, Heim J, Ho YS, Matthews DE, Wouters EF, JanssenHeininger YM (2006) Dynamic redox control of NF-kappaB through glutaredoxin-regulated S -glutathionylation of inhibitory kappaB kinase beta
For example, Route2Health Glutathione is the best choice