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The shot itself takes under thirty seconds
According to clinical resources such as the Mayo Clinic, while B12 is essential for nerve and red blood cell health, theres no strong evidence that injections improve energy or aid weight loss in people without a documented deficiency
Besides the acute phase gastrointestinal effects which may lead to up to 10% of people discontinuing the drugs, there are other potential GI side effects of obstruction, excessive loss of muscle mass, and potentially association with some eye disease adverse events
Here is the mechanism in practical terms
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