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Factors such as initial B12 levels, underlying medical conditions, certain medications, advanced age, and injection frequency can affect the absorption and utilization of B12, possibly shortening the duration of action
If your B12 level is normal, there is little evidence to support that they actually work for these purposes, Dr
This direct pathway ensures nearly 100% bioavailability, meaning your body can utilize virtually all the administered B12
Multi-dose Vials: For ongoing therapy under medical supervision
After that, they get monthly injections of the same amount
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