Injectable (IV/IM) glutathione has much higher bioavailability than oral forms, since it bypasses digestion, and is generally more effective for brightening
Glia 45 , 208212 (2004)
As a result, the disparity between safety profiles for GHK-Cu injection vs topical delivery methods is considerable
for review, see Sikiric et al., 2018) persists against the notion of continuous, direct injury (increased intra-abdominal hypertension) and shows that organs may adequately function despite continuously elevated intra-abdominal pressure
The store, which this masthead has chosen not to name and which did not respond to requests for comment, is one of dozens of online sellers, operating in an unregulated, but potentially highly lucrative pharmaceutical Wild West
it is a general-purpose peptide used for wound healing and overall skin anti-aging