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An extended duration could signify something more serious like an allergic reaction or nerve damage
B12 is included for energy and because it is cheap, well tolerated and gives the injection a perceptible effect though only patients who are actually deficient should expect a real energy change from it
Diagnostic vs
Important Notice These products are: Not approved for human consumption Not approved for diagnostic or therapeutic use Not intended for medical application Intended strictly for controlled laboratory research Researchers should use laboratory materials only within lawful research environments
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