Vitamin b12 deficiency can cause several symptoms including, extreme tiredness, lack of energy, mental fog, and changes in mood and balance. Find out more about b12 deficiency and our private vitamin b12 Does B12 Keep You Awake? Sleep Effects and Timing Guide Bolt Pharmacy Understanding the B12 Vitamin Shot: Benefits, Risks, and Dosage Guide Constant tiredness even after proper rest? Feeling dizzy, weak, or noticing tingling in your hands and feet? These are not normal everyday symptoms they could be early warning signs of Vitamin