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A 3-ounce serving of cooked beef liver has 70.7 micrograms of vitamin B12
Oral vitamin B12 is generally safe to take at recommended doses
Those with absorption difficulties, such as pernicious anaemia or following gastric surgery, may require significantly higher doses or intramuscular injections as prescribed by their healthcare provider
These shots are typically given right into a muscle, like your upper arm or thigh
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