In summary, the reasons a GP surgery may refuse an early B12 injection are often rooted in a strict interpretation of established, but imperfect, guidelines, a misunderstanding of the actual science of B12 storage and metabolism, and a desire to maintain administrative consistency
Common side effects and frequency Phase 3 trial data from TRIUMPH-4 provides the clearest picture of what to expect at clinical doses
Vitamin B12 is a non-toxic compound and to date, there are no reported side effects of taking too much Vitamin B12
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and refusal to provide written informed consent
Please note that all the risks mentioned are only associated with extremely high doses of vitamin B12