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Prices are in GBP and shown per vial as supplied, lyophilised, for in-vitro laboratory research only
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
The American Journal of Clinical Nutrition
After a B12 shot, blood levels rise well above the desired range (150-700 pmol/L in most places), and stay high for a while
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