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Declining B12 despite supplementation may indicate an absorption issue requiring higher-dose supplementation
With regular injections, you can ensure consistent B12 levels without the hassle of remembering to take pills
A 2025 systematic review of the compound identified only 36 total studies, 35 of which were conducted on animals and just one single study (with a sample size of 12!) conducted on humans
However, a large portion of the vitamin is wasted when absorption is impaired
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