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Plus, the symptoms of low B12 can be very subtle, or they may be confused for symptoms of other conditions
More serious vitamin B12 side effects may include the following: Allergic reactions, such as hives, trouble breathing, or swelling of the face, lips, tongue or throat
Cyanocobalamin is more commonly found in oral supplements and fortified foods, and while it is effective for many people, some practitioners prefer hydroxocobalamin for injections due to its natural form and longer retention
The intranasal formulations are not approved to treat acute B12 deficiency
With practice, most people become surprisingly comfortable with At home B12 injection
Available in both transdermal delivery format and dry-fill capsule (black bottle) for comparative research applications
