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In some cases, a vitamin B12 shot can interfere with other medications
This only declines with age due to the decrease in stomach acid-which also assists in Vitamin B12 absorption-as men age
Most individuals transition to a maintenance schedule of one injection every 1-3 months, depending on their specific needs and how well they maintain B12 levels through diet and oral supplements
The actual injection takes only a few seconds, and any discomfort is typically minimal and brief
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