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The volume of water you add changes the concentration and therefore how many syringe units equal each dose
Your practitioner will review any specific considerations based on your health history
You also take this vitamin in combination with other B vitamins, such as B1 and so on
When B12 levels become problematic: High-dose supplementation (particularly doses exceeding 1,000 micrograms daily) Frequent B12 injections without medical supervision Underlying conditions affecting B12 metabolism Concurrent use of multiple B12-containing supplements The NHS does not set an upper safe limit for vitamin B12 because harmful effects from excessive intake have not been definitively established
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