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While oral supplements can offer support, they may take much longer to produce noticeable effects, especially if your bodys absorption is compromised
Initial correction of significant deficiency typically involves weekly or biweekly injections for several weeks until levels normalize and symptoms resolve
Injections may be recommended for selected clients, especially where absorption issues or deficiency are suspected
drive to eat, not willpower: Martin Nature Medicine 2025
When taken orally, B12 binds to saliva and stomach acid, which can reduce its absorption in the body
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