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Vitamin B12 injection : For maximum bioavailability, especially in cases of severe deficiency or malabsorption, intramuscular injections of vitamin B12 offer direct absorption and are often prescribed to rapidly restore adequate levels

There are many varieties of the vitamin, including: B1 (thiamine) B2 (riboflavin) B3 (niacin) B5 (pantothenic acid) B6 B7 (biotin) B12 Folic acid Food is the best source of this nutrient

[DOI] [PubMed] [Google Scholar] 77.Schweiger C., Weiss R., Berry E., Keidar A

Research findings are preliminary and do not imply safety or efficacy.

Medications and supplements: If you are taking any medications or vitamin B12 supplements, inform your doctor