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Many energy drinks, protein bars, and meal replacement shakes contain high doses of B12 (sometimes 2,000 to 5,000% of the Daily Value per serving)
The active ingredient is the same either way
Read more by Darcy Jimenez Darcy became managing editor at C+D in April 2026, after joining as a senior reporter the previous August
Many clients have experienced quick and noticeable improvements in energy and overall well-being after starting B12 injections, when medically indicated
May help overcome weight loss plateaus when paired with a healthy lifestyle
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