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Vitamin B12 deficiency can cause digestive problems like diarrhea, constipation, or loss of appetite
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Keep out of reach of children.
Medically reviewed by Dr Clair Grainger Last reviewed: 29 Jun 2026 With Superdrug Online Doctor you can message our Doctors for FREE via your patient account
Injections ensure your body gets maximum effectiveness compared to oral supplements that may lose potency during digestion
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