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B12 supplements may improve heart health by reducing homocysteine levels, a compound that is associated with an increased risk of heart disease

Peel off or mark out the old labels and re-label as SHARPS to warn others of its contents

If neurological symptoms worsen or fail to improve after four to six weeks of appropriate treatment , further investigation is necessary to exclude alternative diagnoses or complications

Stopping treatment can cause a flare

A 2025 meta-analysis of 16 studies involving 6,098 participants found no statistically significant difference between intramuscular, oral, and sublingual B12 supplementation routes