can vitamin b12 injections cause diarrhea How Quickly Does Shot Work? Does It Help to Lose Weight? Signs You May Have a

[10] Relative contraindications encompass early polycythemia vera, tobacco amblyopia, and concurrent sensitivity to benzyl alcohol used as a preservative

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Vitamin B12 is present in many dietary sources, such as: meat fish eggs dairy products nutritional yeast some fortified foods Vitamin B12 shots are a form of supplementation that contains a synthetic version of vitamin B12, or cyanocobalamin

Swallow oral supplements Oral B12 supplements come in a variety of forms, including lozenges, gummies, tablets, and soft gels

These symptoms are typically more common with higher-strength preparations