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If you happen to experience a severe adverse reaction hives, swelling, difficulty breathing, etc
It's readily available for cellular use and may be preferable for individuals with certain genetic variations or specific health conditions
Your vitamin B12 levels can be easily determined by a simple blood test, and this test will help your doctor decide what level of treatment is suitable for your health needs
This ensures the B12 remains in the muscle for steady release rather than being dispersed too quickly
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