Headache Mild diarrhea Mild pain or redness at the injection site Nausea Serious or rare side effects Stop taking Vitamin B12 Injection and seek immediate medical attention right away if you experience any of the following: Allergic reactions, including angioedema, hives, and trouble breathing Signs of heart problems, including swelling, rapid weight gain, and shortness of breath Signs of hypokalemia, including muscle weakness, slow or irregular heartbeat Contraindications: This is not an exhaustive list of contraindications
You're injecting inactive compound
Elevated Serum Vitamin B12: Causes, Workup, and Clinical Meaning A patient comes in after routine blood work, and the report flags a serum vitamin B12 of 1,250 pg/mL
Vitamin B12s Role in Red Blood Cell Production and Anemia Prevention The Link Between Vitamin B12 Shots and Improved Mood States Vitamin B12 is key for brain health, affecting mood and thinking