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The most common side effect is developing flu-like symptoms after receiving the injection

These characteristics are driven by specific molecular pathways, including persistent TGF- signaling and activation of the RhoA/ROCK pathway [124,168]

Fortunately, there is increasing evidence that oral B12 supplements are just as good as injections for raising blood levels in most people ( Vegetarians and vegans are usually advised to take at least 10 mcg per day, or at least 2,000 mcg once per week ( However, some doctors still prefer the use of injections

This highlights the necessity of proactive screening and early intervention to prevent the progression of these complications [39]