The Three Supplements are- folic acid, B12, and D pills.
Folic acid is vitamin B9 in synthetic form.
Belardo advised all childbearing women to use it. Belardo, in her 30s, takes a folic acid-containing multivitamin daily.
The CDC advises women to take 400 micrograms of folic acid daily.
Vitamin B12 is present in meat, dairy, eggs, and fish but not plants, vegans may have trouble getting it.
However, vitamin B12 is needed to make red blood cells and DNA.