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Cyanocobalamin and hydroxocobalamin are both Vitamin B12 forms used in injections
How long does a B12 shot last
Medical necessity narrative (if requested): For payers that require prior authorization or post-service review, a brief clinical summary explaining why oral supplementation is not appropriate may be required
Essentially, the FDA has not formally evaluated this exact mixture for safety/efficacy, but each ingredients effects are well-known
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