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Insider's takeaway The Institute of Medicine has not established a tolerable upper intake level of B12 because studies show no adverse health effects when taking excess levels of B12, either through food or supplements
A 2.33 mg dose is 2.33 23.33 = 0.10 mL = 10 units
Gut symptoms often show first improvements within 2 to 4 weeks, while tendon and ligament changes usually begin around 3 to 4 weeks after a protocol that had stalled in physical therapy
Prescribers should be mindful of the impacts that delayed gastric emptying and reduced blood sugar can have with other medications
Nervous System Issues : Vitamin B12 injections can sometimes cause nervous system problems, such as numbness or tingling in the hands and feet, muscle weakness, or difficulty walking
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