US$ 22.71
can i do b12 injections myself How Long Does It Take For To Work? Learn how to administer your
Description
Prescription Requirements for Different B12 Formulations Prescription needs for B12 formulations vary by type and patient condition
Nat Rev Gastroenterol Hepatol

Not necessarily, but its recommended that you consult with your healthcare provider if you suspect you have elevated vitamin B12 levels

Pickart L, Margolina A