Because gray-market Melanotan 2 in particular is sold outside any approved supply chain, its identity and purity are unverified and identity confirmation (for example by mass spectrometry and HPLC, with a batch certificate of analysis) is the minimum characterization a rigorous research setting would require before drawing any conclusion
But using weights, bands, universals or even your bodys own weight in simple floor exercises or wall squats can produce an anabolic effect on muscle
Human data is extremely limited
Kwang-Chul Kwon and McCarthy
Palatable Source of Pure, High-Quality L-Carnitine
Pre-event loading, post-workout recovery, hydration after competition, or amino acid support for muscle repair