I have been taking these for the past 6 months, since I found out I was pregnant. Before that, I took the Super Nutrition Simply One Women's.This vitamin is easy on the tummy, and easy to take 'cause it doesn't have that intensely odorific smell like other vitamins. Plus, you take ONE daily. How easy is that? Other brands, esp. the ones the Doc gave me made my stomach cramp, and I would gag just swallowing it. I really like the Super Nutrition brand quality and will continue to take the Prenatal and Women's even after this pregnancy.So far, in my pregnancy, Baby looks healthy and happy in all the routine diagnostics so can't argue with results. I also take one 1000 mg gelcap of Wild Salmon Oil, 200 mg of extra Spirulina, and an additional supplement of Calcium-Magnesium-Potassium every day for good measure...