how long do b12 injection side effects last Does a Shot B12 Injection: Uses, How to

Both B12 and iron are vital for making blood cells

If you require a supply beyond five weeks, please select a Tier or Extended Plan instead

B12 is water-soluble, meaning your body excretes what it doesn't need rather than storing it to potentially harmful levels

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Additionally, too much B12 can cause body systems to become overloaded with an excess of B12, leading to adverse effects such as fatigue and headaches