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Pain is often worsened by sitting, standing for long periods, coughing, or sneezing

Injectable GHK-Cu is popular in certain wellness clinics and longevity circles, marketed as GHK-Cu therapy or offered alongside other peptide injections

This can be a major drawback for oral glutathione supplements

A thicker needle is necessary for IM injections to penetrate the muscle tissue effectively

While early and smaller trials showed promising fat-loss effects, the largest Phase IIb trial did not achieve statistical significance in humans for its primary endpoint of weight reduction, which led to the program being discontinued