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B12 is safe on its own, but a few conditions call for extra care, which is why a provider reviews your history before treatment: Leber's hereditary optic neuropathy, a rare inherited eye condition, where certain forms of B12 may be a concern for the optic nerve
There may be a short window (one or two hours) to prevent more damage
They have more complex health histories
Diarrhea and Constipation : Gastrointestinal disturbances can occur but tend to improve as the body adjusts to the medication
And it takes more than just a prescription to achieve sustained weight loss and the health benefits that go along with it
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