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You can read the full research about these B12 and ECG findings to learn more

Additional tests ensure proper composition and absence of solvents or toxic residues

Patients with diabetes are at an increased risk for Vitamin B deficiencies

So, 1000 mcg of B12 is the same as 1 mg

doi:10.1161/jaha.121.021431 Ramadeen A, Connelly KA, Leong-Poi H, et al
