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The wide range reflects individual variation in requirements and the difficulty of over-dosing b12
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A study run by Spradley states, that Vitamin B12 should reduce fatigue and therefore improve muscular endurance
Other Considerations: Monitoring: Regular monitoring of vitamin B12 levels, complete blood counts, and neurological function is advisable, especially in long-term use
Some products may be compounded or prescribed off-label based on individual assessment
No noticeable side effects other than some PIP (which is weird because Ive injected plenty of times before)
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