can b12 injections cause heavy periods Have you been told you have iron deficiency anemia? First High Vitamin B12 Levels: Causes,
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Triggers include spicy food, hot beverages, alcohol, extremes in temperature, and physical and emotional stress, Dr

GeroScience 10.1007/s11357-023-00919-x (2023)

Oral capsules versus the injected studies Here is a gap most product pages skip
Despite its wide range of uses, Methylcobalamin is generally well tolerated, with few side effects reported

Note by PAS: The Nice Guideline referred to Pernicious Anaemia as autoimmune gastritis