In particular, folate—also known as vitamin B9—works with vitamin B12 to make red blood cells and to utilize iron in the body. Having too little folate, known as a vitamin B9 deficiency or a ...

Folate is found in dark green, yellow and orange fruits and vegetables, beans, nuts, seeds and fortified grain products such as pasta and flour. Foods with a high concentration of folate include ...

Like most supplements, vitamin B complex can cause side effects, depending on the dose and type of vitamin B. Find a list of ...