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Any disruption in this chain—whether from age-related decline in gastric acid, autoimmune gastritis (pernicious anemia), medications (particularly proton pump inhibitors and metformin), or gastrointestinal surgery—can impair absorption regardless of how much B12 you take orally

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Quantity:1-Bottle

Support for Nervous System Health- B12 plays a crucial role in maintaining the health of the nervous system