This depends on multiple factors, as everybody is unique and reacts differently to supplemental injections
[67] The weekly dose should be divided into 6 or 7 subcutaneous injections, and the medication must not be administered intravenously
Youll usually start getting injections at least a few times a week
Therapeutic Class: Active Ingredients: Vitamin B12 Vitamin B12 Injection is used to treat and prevent vitamin B12 deficiency in patients with pernicious anemia and other conditions that cause a deficiency of this vitamin
Low vitamin B12 levels can potentiate methotrexate-induced neurotoxicity [149]
Common symptoms can include: Extreme fatigue Lethargy Loss of appetite headaches Feeling faint or dizzy Breathlessness Headaches Heart palpitations Tinnitus Additional symptoms of B12 deficiency can include psychological problems such as low mood, irritability, depression, cognitive changes, or blurred memory