Neither is universally superior
Thiamine deficiency adversely affects the activity levels of these enzymes, with TK, through thiamine-dependent erythrocyte transketolase (ETK) activity, common biomarkers of thiamine status, since it is particularly sensitive to thiamine levels and AKD often exhibiting the earliest detectable changes (6, 41)
The key difference is selectivity: Melanotan II is a non-selective agonist activating MC1R, MC3R, MC4R, and MC5R, producing broader physiological effects including melanogenesis
H.ReimannF.et al (2016)
Cummings BP, Bettaieb A, Graham JL, et al
Other Ingredients: Microcrystalline Cellulose, Stearic Acid, Vegetable Magnesium Stearate, Silicon Dioxide