The terms expiration date and shelf life have slightly different meanings
Here's the Fact Each vitamin serves different purposes and may have varying durations of effect in the body
Signs of Vitamin B12 Deficiency Some common signs that you may be deficient in Vitamin B12 include fatigue or tiredness, weakness, difficulty concentrating or thinking clearly, pale skin, dizziness or light-headedness, loss of appetite, weight loss, constipation or diarrhea, numbness or tingling in the hands and feet, sore tongue, headaches and vision problems
I definitely recommend for anyone with PCOS who have issues losing weight or simply keeping it off
Mateus J, Grifoni A, Tarke A, Sidney J, Ramirez SI, Dan JM, et al