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Sublingual Vitamin B12 is used because it is felt to have superior absorption over oral tablets that are absorbed in the GI tract

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Research Applications Fertility research Testosterone-support investigations Hormonal-balance studies Testicular-function research This is a simplified explanation for educational purposes

People with a deficiency often experience fatigue and weakness

(Frontiers in Pharmacology, 2022) reported pharmacokinetics and tissue distribution in rats and dogs, including a rapid plasma half-life under 30 minutes after IM or IV dosing

No, they complement a healthy lifestyle and work best when combined with a balanced diet and exercise