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The injectable form requires a prescription
Demura Y et al
In the randomized placebo-controlled HOME trial of 390 adults with type 2 diabetes (de Jager and colleagues, Long term treatment with metformin in patients with type 2 diabetes and risk of vitamin B-12 deficiency, BMJ, 2010), metformin lowered serum B12 by a mean of 19 percent over 4.3 years
Because inactive B12 can make up as much as 90% of the total, the test might show normal vitamin B12 levels even if you are deficient
This dual action helps increase fat burning without affecting insulin resistance, muscle growth, or overall hormone balance
M.et al (2016)
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