Most formulations of methylcobalamin injection contain benzyl alcohol as a preservative
Specifically, serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were measured to evaluate liver function, while blood urea nitrogen (BUN) and creatinine were measured to assess kidney function
Presented for research literature review only Walzik D et al
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Finally, behavioral assessments were limited to specific domains and the observed biochemical changes cannot be interpreted as evidence of global neuroprotection, since behavioral deficits persisted and some molecular markers were negatively affected by treatment