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Hum Reprod Update 14(4):367378

There is not as much evidence regarding long-term efficacy or safety of gel vitamin B12 compared to injections, but at this time it appears B12 gel works similarly to raise blood levels

Metabolic Function: At a cellular level, B12 is a key player in metabolizing fats and proteins, helping your body process them efficiently

Furthermore, pyocyanin has been found to disrupt CFTR Cl - transport by inhibiting the endocytic recycling of CFTR and inactivating the airway epithelial vacuolar ATPase, which reduces the expression and trafficking of CFTR, hence disrupting Cl - transport (175, 176)