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A deficiency of vitamin B12, therefore, results in reduced production and maturation of cells with high turnover particularly red blood cells

Molecular Weight: 3367.9 g/mol

Nasal Sprays : Nasal B12 sprays have been shown to effectively raise B12 levels and offer a convenient, needle-free alternative for individuals who prefer non-injection options or have difficulty with traditional supplementation[23]

Reported effects are generally mild and may include injection-site reactions (redness, soreness, swelling), nausea, stomach upset, headache, or fatigue

The condition often develops over months or years, so expecting resolution in days would be unrealistic