This means that if you take more than your body needs, the excess is generally excreted in your urine, which is why B12 is considered very safe, even at high doses
This is part of what makes peptides so appealing compared to typical pharmaceuticals: Many of the most common peptides used for medicinal purposes today (like for weight loss, diabetes, and hormone issues) are sequenced directly from peptides in our bodies
It is studied for potential roles in tissue repair, inflammation regulation, and gastrointestinal protection, but remains an investigational compound without approved medical use
However, when symptoms occur, often due to the underlying condition rather than the elevated B12 itself, they may include 12 : Acne Headaches Anxiety Irregular heartbeats Trouble falling or staying asleep Nausea Fatigue Dizziness The symptoms of high vitamin B 12 are vague
However, heres a general timeline of what you might expect: Immediate to 24 Hours Post-Injection Some individuals report feeling an immediate boost in energy and mood within hours of receiving the injection