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Naunyn-Schmiedeberg's Archives of Pharmacology

Vitamin B12 also has several contraindications: It is important to know that there is no universal dosage for vitamin B12

### Get tested If your healthcare provider suspects a vitamin B12 deficiency, theyll likely suggest a blood test to examine: - Your levels of B12 and other essential nutrients - Common markers for vitamin deficiencies - Your complete blood count (CBC) If you decide to proceed with testing, you can make an in-person appointment with a nearby testing facility

Composed of a sequence of 15 amino acids, the peptide can also be found in trace amounts in the gastric fluids of other mammals