How to Pick the Best Multivitamin for You

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You don't head to the gym or out for a jog without preparing all of the essentials: sneakers, headphones, water bottle. But do you prep for your day with one of the best multivitamins for women?

Chances are, you don't pop one daily—almost half of women under age 40 don't, according to the Centers for Disease Control and Prevention. Big mistake, since more than 90 percent of women in their 20s, 30s, and 40s don't meet their vitamin and mineral requirements through diet alone—and you need that multi even more if you exercise. (Science confirms this to be true: Falling short in these seven vitamins can make your workout feel tougher.)

"Vigorous workouts raise your body's vitamin and mineral requirements, so it's practically guaranteed that you won't get enough nutrients from food," says sports nutritionist Dawn Weatherwax-Fall, R.D., coauthor of The Complete Idiot's Guide to Sports Nutrition.

Keep reading to learn about the surprising new reasons that a multi is a must, plus how to find the best multivitamins for women (we're sharing label details to look for and naming brands!).

The Best Multivitamin for Women: How to Choose

Drugstores carry more vitamins than nail-polish shades, but that doesn't mean you can pick just any old one. Consumer Lab recently found that more than half of the 21 multivitamins they tested didn't contain the nutrient amounts listed on the label. Even worse, some capsules failed to release ingredients properly or were contaminated with toxic lead. (

So how do you choose the best multivitamin for women? The highest-quality products tend to be store brands from major chains (Target, Wal-Mart, and Rite Aid) or big-name companies (One A Day, Vitamin World, Centrum, and Puritan's Pride). In addition, check the label for these three criteria:

  • At least 600 IUs vitamin D. Don't settle for the 400 IUs in some multis. You need more of this supervitamin, which promotes strong bones, boosts immunity, regulates blood pressure and, in one study, was associated with a 50 percent lower risk of breast cancer. (Think you need more? Here's how to pick the best vitamin D supplement.)
  • 18 milligrams iron. Young women need this amount to make up for what they lose every month through menstruation, yet many multis have no iron at all because men and older women can get too much. (It's an especially important mineral for active women!)
  • 400 micrograms folic acid. Anything less than this daily dose may not be enough to help prevent birth defects.

5 Reasons to Make One of These Best Multivitamins for Women a Daily Habit

  1. Curb cravings. A multi may make you less hungry when you're dieting, studies reveal. Researchers think that it short-circuits the body's natural response to calorie cutting, which is to boost appetite to counter vitamin deficiencies.
  2. Keep energy up. A good vitamin prevents low iron, which makes you drag during workouts and may also cause hair loss. One in 10 women is low in iron, with vegetarians, vegans, endurance athletes, and anyone with heavy periods being especially vulnerable. (

Multivitamin Myths: Fact vs. Fiction

Pop quiz: If you work out hard, you need tons of supplements, right? Not necessarily, but certain capsules and products can help your endurance on those long runs. Here, some common myths, and what you really need to know. (

True or False: Athletes should take extra B vitamin supplements.

False. Research shows that intense exercise increases your body's need for several B vitamins, which help repair muscle damage and reduce levels of homocysteine, an amino acid linked to increased heart disease risk that rises in people who exercise for more than 12 hours weekly. But don't pop a separate B supplement. The best multivitamins for women who lead active lifestyles include at least 100 percent of the daily values (DV) for riboflavin, B6, B12, and folic acid, says Melinda M. Manore, Ph.D., R.D., a professor of nutrition and exercise sciences at Oregon State University in Corvallis.

Working out puts you at special risk for vitamin D deficiency.

True. Over half of women don't get enough D, but athletes are especially likely to have low levels. Scientists think it's because they have another healthy habit: slathering on more sunscreen than the average woman (UV rays are a key source of D). Low D may affect muscle function and bone health (it's crucial for absorbing calcium to protect bones during high-impact sports). All women should aim for at least 1,000 IUs daily, but active women need up to 2,000 IUs. When choosing a D supplement, be sure to factor in what you get from your multi and calcium supplements.

All those different energy bars do the same thing.

False. Many bars are high in protein and fat, which may upset your stomach—the last thing you need in a marathon. You need a bar that packs highly digestible carbs, which convert quickly to glucose to fuel working muscles. Have 30 to 60 grams of carbs per hour to keep you truckin' (one good bet: Power Bar Performance Bars). After exercise, a bar with 6 to 10 grams of protein (such as a Clif bar) will help rebuild broken muscle fibers. The best bars have sodium and potassium to replace salts you sweat out but aren't overloaded with vitamins you already get from your multi. (

Common Questions About Multivitamins for Women

"Why does my multivitamin turn my pee such a bright shade of yellow?"

"Contrary to common belief, it doesn't mean you're urinating away nutrients," says Weatherwax-Fall. "It's a healthy sign that your body is metabolizing the B vitamins in your multi and protcessing out any excess."

"Why do I need extra calcium?"

Multis don't have the recommended 1,000 milligrams because the pill would be too big to swallow (this mineral has large molecules!). To get the calcium you need, take a separate supplement of 200 to 400 mg that also has 100 to 200 IUs of vitamin D to aid absorption. Just don't pop several calcium pills simultaneously or at the same time as your multi: Your body can absorb calcium in small doses only. (Bonus: The Best Calcium Sources For Vegans)

"Can I OD on vitamins if I also eat fortified cereal?"

Yes. You could get too much folic acid. So stick with your daily multi and skip the cereal, or take your multi every other day. (Hint: To remember which day to take your multi, jot it down in your planner.)

"Do vitamins expire?"

You bet. (Just like sunscreen!) When buying, make sure the expiration date is at least a year away. Once you bring the bottle home, store it in a cool place out of direct sunlight.

"Does it matter when I take my multi?"

Yes. It's best to take it after a meal, because the food in your belly boosts your body's uptake of nutrients.

3 of the Best Multivitamins for Women (All Are Chewable!)

A multivitamin is one of the best tools you can add to your health and fitness arsenal to optimize your health and perform at your best, but oftentimes they're dry, chalky, and hard to choke down. Not anymore! While you may be too old to enjoy Flintstones Gummies vitamins, these chewable best multivitamins for women are just as fun, tasty, and colorful as their kid counterparts-and pack essential nutrients adult women need. (

  1. Naturemade Calcium Adult Gummies. These are perfect for adults who are searching for a slightly more pleasant, tastier way to get the daily recommended amount of calcium. They don't contain any gluten, synthetic dyes, preservatives, or yeast, and come in cherry, orange, and strawberry flavors. ($25.99 for 100,
  2. One a Day Women's VitaCraves Gummies. A complete multivitamin designed specifically for women, these come in orange, cherry, and blue raspberry flavors and provide B vitamins to help you stay energized from morning to night, as well as calcium to support bone health and vitamins A, C, and E for skin health. ($20.10 for 150,
  3. Centrum Flavor Burst. Designed specifically for active men and women, these boast antioxidants and B vitamins to help maintain energy. ($26.83 for 120,
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