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Cycling is frequently suggested as taking too much copper can lead to toxicity
For instance, a study by Grace et al., on lambs receiving a single 2 mg subcutaneous B12 injection demonstrated significant increases in serum and liver B12 concentrations for up to 24 days compared to untreated animals (2)
B12 is also important for carbohydrate metabolism
Suppliers making bold medical promises may be operating outside legal boundaries, which raises questions about their overall business practices
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