Older people and people with digestive tract conditions are most at-risk for developing vitamin B12 deficiencies
Find out, and learn about possible health effects, in the Thiamin (B-1) section of our B Vitamin Supplements Review
Brain health Vitamin B12 also helps regulate melatonin, the hormone that controls your sleep-wake cycle
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
This increases the risk that: Products may be contaminated or mislabeled Adverse events may not be monitored or reported Patients may be misled about efficacy 4
