One-A-Day Women's Multivitamin Review

One-A-Day Women's Multivitamin
Bottom Line

One-A-Day Women's Multivitamin is a good choice for any woman who has not yet reached menopause. It has the full recommended daily dosage of folic acid, 400 mcg DFE, and iron, 18 mg -- important for women who are still menstruating and could become pregnant.

  • 100 percent RDA of folic acid
  • 100 percent RDA of iron
  • Approved in independent testing
  • Well-tolerated by most
  • 50 percent RDA of calcium

Breaking it down

Key ingredients

A good choice for most younger women. Experts recommend that premenopausal women look for a few key nutrients in their multivitamin, namely 18 mg of iron and at least 400 mcg of folic acid. Women lose iron each month when they menstruate, and folic acid is recommended for all women of childbearing age to prevent potential neural tube defects in babies. One-A-Day Women's contains the recommended amounts of iron and folic acid, in addition to 1,000 international units (IU) of vitamin D, 500 mg of calcium and 2,500 IU of vitamin A, with 20 percent as beta-carotene. One-A-Day Women's is certified by a professional testing organization for accuracy in labeling. As the name implies, the dosage is one pill per day.

Side effects/contraindications

Very few complaints of stomach upset. Although a few reviewers say that One-A-Day Women's tablets are large, we see that issue with most vitamins. Some solve the problem by cutting the pill in half, but for most it's not an issue and these seem to be well-tolerated by most. There are a few complaints of stomach upset, but most say it's not a problem if they take it with food, as the manufacturer recommends, rather than on an empty stomach. There are no known side effects with any of the ingredients; even the vitamin A is present as beta-carotene, (which means your body will convert only as much as it needs). It is not gluten free or vegetarian.

Our Sources

1. Consumer Lab

Multivitamin and Multimineral Supplements Review, Editors of, Feb. 22, 2017

One-A-Day Women's Formula is one of 13 multivitamins targeted at women tested by in its latest review of multivitamin supplements. tests for quality, accuracy in claimed ingredients and FDA labeling requirements. Products are either approved or not approved.


One-A-Day Women's Multivitamin, Tablets - 100-Count, Contributors to, As of April 2017

In more than 940 reviews, One-A-Day Women's Multivitamin earns an overall rating of 4.6 stars out of 5; however, these are for both the men's and the women's formulations. Most say they have noticed a positive difference in how they feel after taking this multi and there are very few complaints of stomach upset or other issues.


One-A-Day, Women's Formula, Multivitamin/Multimineral Supplement, 200 Tablets, Contributors to, As of April 2017

One-A-Day Women's Multivitamin earns an overall rating of 4.6 stars out of 5 in nearly 95 reviews at online vitamin retailer Quite a few reviewers say they like that they only have to take one pill per day to hit 100 percent RDA of some important ingredients. Most also say it's easy to swallow and tolerate.


One A Day Women's Multivitamin/Multimineral Supplement Tablets, 100 count, Contributors to, As of April 2017

One-A-Day Women's Multivitamin gets far fewer reviews here, just under 25, and satisfaction is not as good with 4 stars out of 5. Most are very pleased, but a few say they are too hard to swallow.