Key considerations: Typical concentration: 50 mg per capsule Administration: Swallow whole with water
Even if you can absorb B12 but have a deficiency caused by diet, a short course of injections would be the best way to bring levels up quickly, so I imagine that's why you were given it rather than tablets
As a result, it can take more than 48 hours for cyanocobalamin to eventually convert to usable B12, and even then only a small amount of converted and absorbed
Suffering from hemophilia
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More research is needed to determine whether vitamin B12 directly affects body weight or BMI