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Because vitamin pills can be difficult to digest and often contain a multitude of ineffective substances, injections are a much-preferred, direct method
With careful oversight and personalized dosing, it can significantly improve health outcomes related to hematological and neurological wellbeing
Chapman LE, Darling AL, Brown JE (2016) Association between metformin and vitamin B12 deficiency in patients with type 2 diabetes: a systematic review and meta-analysis
If you use another B12 injection kit (hopefully not cyano B12), aim for at least 1 mg of B12 per shot, which is plenty
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