Source Naturals Sublingual Methylcobalamin Vitamin B-12
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Methylcobalamin Vit B-12 1mg is more bio-available for energy production!
(Source Naturals) Source Naturals Methylcobalamin Sublingual Vit B-12 is more concentrated than other forms of vitamin B-12. It releases quickly into the blood stream to support the central nervous system and enhance energy production. One to two tablets under the tongue.