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Side Effects As with all pharmaceuticals, some unwanted effects can occur from the use of Vitamin B12 Injection

Both the National Institutes of Health (NIH) and the Institute of Medicine have not established an upper limit for B12 intake, even when doses exceed the daily recommended amounts by thousands of micrograms (source: National Institutes of Health)

Chang also treats patients with platelet-rich fibrin (PRF) for skin quality and to address mild hollowing

Liver, fatty fish like salmon, beef, eggs, and cheese are solid B12 sources
