Expected Duration of B12 Injection Benefits The duration of vitamin B12 injection benefits can vary based on individual factors, but in general, the effects of a single injection can last for several weeks to several months
The benefits of B12 shots extend beyond beauty enhancements and weight loss
Common symptoms include fatigue, weakness, anemia, numbness or tingling, and difficulty thinking
Retrieved May 27, 2025, from Linus Pauling Institute
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