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Khavinson, Vladimir et al

Any insights on how they compare on safety side

Use of synthetic IGF-1 analogs is prohibited at all times due to their performance-enhancing potential and influence on growth pathways. WADA Prohibited List, 2024 Legal Status in the United States and Globally Possession for personal research use is not criminalized in most jurisdictionsbut selling, distributing, or marketing IGF-1 peptides for human consumption can lead to regulatory penalties

The previously mentioned study finding 70% of GHK-Cu users showed increased collagen versus 50% for vitamin C and 40% for retinoic acid suggests copper peptides may represent the most effective topical collagen-building approach currently available

No completed Phase 3 trials registered

Carefully read your test kits instructions and return the sample within the specified time frame