That spread tells you price is tracking something other than material quality
CaloMist Nasal Spray (cyanocobalamin, USP) label
By selectively inhibiting NNMT an enzyme central to energy regulation and fat metabolism this compound has demonstrated, in preclinical studies, the capacity to elevate intracellular NAD and SAM levels, suppress lipid accumulation in adipocytes, and reduce white adipose tissue mass in diet-induced obese mouse models
10.1097/00003086-199305000-00038 59 KawakamiT.KawaiT.TakeiN.KiseT.EdaS.UristM
Nasal spray accommodates travel and lifestyle factors that make injection impractical
When any component fails, oral supplementation becomes far less effective, potentially requiring massive doses to achieve therapeutic blood levels