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Key benefits include: Bypasses GI absorption barriers
Holmes, R
Side Effects and Safety Considerations B12 injections are generally well-tolerated when administered appropriately
Most published studies select a dose based on prior literature without systematically testing whether that dose is optimal for their specific endpoint
The vitamin is naturally found in animal products such as meat, fish, dairy, and eggs, whilst fortified foods and supplements provide alternative sources for those with dietary restrictions or absorption difficulties
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