That means 90% of your reconstituted 10mg vial sits in the fridge unused for most of its shelf life
So as you move forward with supplementation, please look out for the following symptoms of being overmedicated: rapid or irregular heartbeat, nervousness, irritability or mood swings, muscle weakness or tremors, diarrhea, heat intolerance, menstrual irregularities, hair loss, weight loss, insomnia, chest pain, and/or excessive sweating
There may be a link between vitamin B12 and energy
A study from the Netherlands found the 25th to 75th percentile among people 65 to be 180 to 300 nmol/l (van Wijngaarden, 2017)
Full list of articles: How often should you get a B12 shot, and how much B12 should you inject per shot
You can also ask the pharmacy if you can send the peptide to a lab to verify the contents