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However, that is not always the case
Heat, light, and moisture can degrade the peptide over time
Methylcobalamin provides immediate bioavailability without requiring metabolic conversion, making it theoretically superior
It inhibits NNMT (nicotinamide N-methyltransferase), an enzyme regulating metabolism, fat storage, and NAD+ consumption.[4][27][6] NNMT methylates nicotinamide, a NAD+ breakdown product, diverting it from recycling and reducing available NAD+
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