The Mayo Clinic indicates high doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache Nausea and vomiting Diarrhea Fatigue or weakness Tingling sensation in hands and feet Healthline says: In very rare cases, some people can experience side effects caused by allergic reactions or sensitivity In addition to helping athletes build muscle, vitamin B12 plays a role in maintaining nervous system function and brain health
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The cost typically exceeds brand-name semaglutide even accounting for the added b12
If you feel uncomfortable during use, stop immediately
Conclusion: Is a B12 Injection Right for You
Learn about these lifestyle factors in the updated answer to the question: Do any supplements really help with brain function, like memory and cognition