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how long does a b12 injection stay in your system do injections last? How Long Does A B12
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Because they lack the belief and confidence needed to provide these treatments

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This may be because vitamin B12 plays a crucial role in the creation of serotonin - a neurotransmitter responsible for regulating our moods

doi: 10.1007/s00384-014-2030-8 106 ZablockaBGoldspinkPHGoldspinkGGoreckiDC

Research has explored its role in supporting neurological function and cellular energy production
