what do you need b12 injections for The Advantages of Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine How Can Vitamin B12 Shots

Did you know that Vitamin B12 (cobalamin) is also called the energy vitamin

[137] Laboratory [edit] The complete laboratory synthesis of B 12 was achieved by Robert Burns Woodward [138] and Albert Eschenmoser in 1972

If I understand rightly you haven't an absorption problem.So once on supplements or a richer B12 diet you can store and utilise b12 from your liver

For example, research on B12-deficient individuals indicates significant improvements in memory and attention span with regular supplementation

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