How This Works Melanotan II is a synthetic cyclic heptapeptide analog of -melanocyte-stimulating hormone that binds to melanocortin receptors, particularly MC1R and MC4R [1]
This is why properly structured research protocols always include cycling (periods of use followed by breaks) to maintain sensitivity

Cytotoxi Page 268 and 269: 19 Oishi M, Mochizuki Y, Takasu T, Page 270 and 271: 6 Iida K, Hase K, Shimomura K, Sudo Page 272 and 273: 2 Kageura T, Matsuda H, Morikawa T, Page 274 and 275: 3 Blumenthal M, Busse W, Goldberg A Page 276 and 277: 2 Monographie der Kommission E, 199 Page 278 and 279: 9 Hammer KA, Carson CF, Riley TV, 1 Page 280 and 281: 21 Czinner E, Hagymasi K, Blazovics Page 282 and 283: 60 Khayyal MT, El-Ghazaly MA, Kenaw Page 284 and 285: 101 Sathish T, Babu UK, Kumar KK, P Page 286 and 287: 139 Zuber R, Modriansky M, Dvorak Z Page 288 and 289: 40 Gordon A, Hobbs DA, Bowden DS, B Page 290 and 291: 78 Malewicz B, Wang Z, Jiang C, Guo Page 292 and 293: 117 Svobodova A, Walterova D, Psoto Page 294 and 295: 9 Pereira EM, Machado Tde B, Leal I Page 296 and 297: 6 Heptinstall S, Awang DV, Dawson B Page 298 and 299: 4 Erta S, Akta HF, Haznedaro Page 300 and 301: ID 3615: Tilia cordata Mill. Page 302 and 303: 28 Xue WL, Li XS, Zhang J, Liu YH, Page 304 and 305: ID 3640: Verbena officinalis L

According to LIVV Natural, HGH injections and peptides have similar goals