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In the United States, injectable vitamin B12 and most combination vitamin B complex injections are regulated and generally require a valid prescription from a licensed healthcare professional
Ensuring that you have a sufficient amount of B12 in your body can help the body with this function much more reliably, allowing you to have the energy that you require for proper functioning throughout the day
It also explains why B12 deficiency symptoms (like fatigue, brain fog, numbness, or mood changes) can take time to return once levels are restored
Those who lack B12 can find themselves chronically tired, weak, and with a waning metabolism that can cause weight gain
Vitamin B-12 helps your body use fat and carbohydrates for energy and make new protein
