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See your doctor if its a recurring symptom, as dark brown urine can be a sign of liver disease
B12 is added to certain foods, such as fortified fruit juices and breakfast cereals
Before continuing the B12, I would recommend getting your B12 level tested with your doctor
Methylcobalamin is a form of Vitamin B12 that is already in its active form, which means it does not require conversion by the body to become biologically effective
Vitamin B12 is best injected intramuscularly into the deltoid (upper arm), thigh, or gluteal muscle (buttocks)
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