Vitamin B12 Supplements

These products contain vitamin B12 in forms such as cyanocobalamin, methylcobalamin, adenosylcobalamin or hydroxocobalamin. They are sold as tablets, capsules, lozenges, sublingual preparations, sprays and liquids, with strengths that can vary considerably between products. Compare the form, amount per serving and method of use, but do not assume that a higher number or a sublingual format is automatically more effective. Research has not established that one common supplemental form is better than the others. People who follow vegan diets, have absorption difficulties, take certain medicines or suspect a deficiency may need professional assessment and appropriate testing.