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Description
How long does a vitamin B12 shot last, and how long benefits remain

Stacker 2 Energy Shots can get the stamina and vigor you need to increase performance for your workouts and overall fitness needs by dramatically increasing your energy levels

Oral vitamins must get broken down by the GI tract (through stomach, intestines) then go through the liver for metabolizing.

Evidence-based dosing from 300-500mcg.

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Discover the immediate and long-term effects on energy levels, mood, and overall health.
