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Some common causes of vitamin B12 deficiency include: Autoimmune pernicious anemia Dietary limitations, such as vegetarian or vegan diets Medical conditions that affect absorption, such as celiac and Crohns disease Identifying the specific cause of deficiency can help guide treatment and prevention strategies
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Oliveira EAR1
Transparent testing policies with certificates of analysis available for specific batches indicate quality-focused operations
While historically listed with an "unknown status," recent data releases in late 2025 and early 2026 have clarified the safety profile that helped justify the Category 1 reclassification. Study Design: A randomized, placebo-controlled, double-blind Phase 1 pilot study
