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Association of vitamin B12 deficiency in people with type 2 diabetes on metformin and diabetic peripheral neuropathy Nature article: Shows prolonged metformin use correlates with lower B12 and more severe diabetic neuropathy
Discuss with your doctor before and during use
Injection site reactions appear in pain and swelling at the injection site
An undated COA, a COA from the same company rather than an independent lab, or a COA that does not specify the batch number is insufficient
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