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A complete women’s multivitamin that helps support bone health with Calcium, and Vitamin D, plus B-Vitamins and Chromium to support physical energy.*
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Immune Health Support
Skin Health Support
Bone Health Support
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*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Frequently Asked Questions

General
One A Day

Women's
Prenatal

Couple's
Pack

General One A Day® Frequently Asked Questions

Why are vitamins important?

Vitamins are organic compounds in food that are needed to support growth and health. With a regular supply of nutrients, we can support good health and normal growth. Since the body does not store all essential vitamins for long periods of time, some should be consumed regularly in the diet. One A Day® multivitamins can be taken to help provide nutritional support.*

Find out which One A Day products might be right for you through our interactive quiz.

Find Your One A Day

How do I know which One A Day® product to choose?

All One A Day® products are complete multivitamins, but each one is uniquely formulated to support different needs.

You can choose a One A Day® product based on gender, age group and health benefits you may need or want to support.

Select a category below to see a list of available One A Day multivitamins.

One A Day® Multivitamin Products for Women

One A Day® Multivitamin Products for Men

One A Day® VitaCraves® Gummy Multivitamins

One A Day® One A Day® VitaCraves® ChewyBites Multivitamins

Can the tablets be crushed/cut in half?

One A Day® tablets can be cut in half.

Does One A Day® contain gelatin?

Yes, many formulas contain gelatin as an inactive ingredient. It is sourced from beef, pork, or a combination of both.

How much gluten does this contain?

We do not add any gluten to our products. However, we cannot guarantee that all raw materials are 100% gluten-free.

Can I use this if I have a medical condition?

We recommend that you consult with your physician before using any One A Day® product if you have a medical condition.

Can I use this with my medication?

We recommend that you consult with your physician before using any One A Day® product with your medication.

Can I take One A Day® with another multivitamin?

We do not recommend taking One A Day® with another multivitamin.

Should I take my One A Day® multivitamin with food?

Yes, we recommend that you take your One A Day® multivitamin with food to reduce the chance of stomach discomfort.

When is the best time to take my One A Day® multivitamin?

You may take a One A Day® multivitamin any time of the day, as long as you take it with food. It is also suggested that One A Day be taken at the same time every day so that it becomes part of your daily routine.

Does One A Day® have products specifically designed for teens?

One A Day® Teen for Her and Him VitaCraves® Gummies are gender specific and contain key ingredients to help address health concerns of teens.

My One A Day® Product has expired since I bought it. Can I still take it?

We do not recommend using products beyond their expiration date. While they will not be harmful, products that are taken beyond the expiration date may no longer provide optimal benefits.

General One A Day

General One A Day® Frequently Asked Questions

Why are vitamins important?

Vitamins are organic compounds in food that are needed to support growth and health. With a regular supply of nutrients, we can support good health and normal growth. Since the body does not store all essential vitamins for long periods of time, some should be consumed regularly in the diet. One A Day® multivitamins can be taken to help provide nutritional support.*

Find out which One A Day products might be right for you through our interactive quiz.

Find Your One A Day

How do I know which One A Day® product to choose?

All One A Day® products are complete multivitamins, but each one is uniquely formulated to support different needs.

You can choose a One A Day® product based on gender, age group and health benefits you may need or want to support.

Select a category below to see a list of available One A Day multivitamins.

One A Day® Multivitamin Products for Women

One A Day® Multivitamin Products for Men

One A Day® VitaCraves® Gummy Multivitamins

One A Day® One A Day® VitaCraves® ChewyBites Multivitamins

Can the tablets be crushed/cut in half?

One A Day® tablets can be cut in half.

Does One A Day® contain gelatin?

Yes, many formulas contain gelatin as an inactive ingredient. It is sourced from beef, pork, or a combination of both.

How much gluten does this contain?

We do not add any gluten to our products. However, we cannot guarantee that all raw materials are 100% gluten-free.

Can I use this if I have a medical condition?

We recommend that you consult with your physician before using any One A Day® product if you have a medical condition.

Can I use this with my medication?

We recommend that you consult with your physician before using any One A Day® product with your medication.

Can I take One A Day® with another multivitamin?

We do not recommend taking One A Day® with another multivitamin.

Should I take my One A Day® multivitamin with food?

Yes, we recommend that you take your One A Day® multivitamin with food to reduce the chance of stomach discomfort.

When is the best time to take my One A Day® multivitamin?

You may take a One A Day® multivitamin any time of the day, as long as you take it with food. It is also suggested that One A Day be taken at the same time every day so that it becomes part of your daily routine.

Does One A Day® have products specifically designed for teens?

One A Day® Teen for Her and Him VitaCraves® Gummies are gender specific and contain key ingredients to help address health concerns of teens.

My One A Day® Product has expired since I bought it. Can I still take it?

We do not recommend using products beyond their expiration date. While they will not be harmful, products that are taken beyond the expiration date may no longer provide optimal benefits.

Women's Prenatal

One A Day® Women's Prenatal Frequently Asked Questions

What is the ingredient DHA in One A Day® Women's Prenatal? As a pregnant woman or a woman thinking of becoming pregnant, why do I need it?

DHA (docosahexaenoic acid) is an Omega-3 fatty acid found naturally in fish such as tuna and salmon. It is a major structural fat in your baby's brain and the retina of your baby's eyes. As many pregnant women are advised to limit the intake of fish, supplementing your diet with DHA can help support healthy fetal brain and eye development.*

Is it safe to take One A Day® Women's Prenatal over-the-counter?

Yes, it is safe for most women to take One A Day® Women's Prenatal. See the product page for specific warnings and allergen statements. One A Day Women's Prenatal includes 800 mcg of Folic Acid (100% of the Daily Value for pregnant women). Inform your doctor if you are taking One A Day Women's Prenatal.

When should I start taking One A Day® Women's Prenatal? When should I stop?

The benefits of a prenatal multivitamin generally begin at conception or in the very early stages of pregnancy. Prenatal multivitamin use, then, is commonly recommended to start before trying to become pregnant. Also, because pregnancy is sometimes unplanned, some sources recommend extra folic acid intake during the span of a woman's childbearing years. Use of One A Day® Women's Prenatal should be consistent throughout pregnancy and continued while breastfeeding as DHA will pass from mother to baby in breast milk to help support healthy brain and eye development in infancy.*

Do both the tablet and liquid gel in One A Day® Women's Prenatal need to be taken at the same time?

No, you may take the tablet and liquid gel together or at different times of the day with food.

Why is there less calcium in One A Day® Women's Prenatal than in One A Day® Women's? Do I need to take a separate calcium supplement?

The recommended intake of calcium for an adult pregnant woman is 1,000 mg per day. This level would be too large to swallow if included in a complete multivitamin tablet. Women who are pregnant may supplement their dietary calcium intake with separate calcium supplements, such as Citracal®. Inform your doctor if you are taking a supplement.

Are there benefits to taking One A Day® Women's Prenatal while breast-feeding?

Yes, if you are breast-feeding, the Omega-3 DHA in One A Day® Women’s Prenatal can be passed from mother to baby in breast milk. DHA helps support healthy brain and eye development in infancy.*

I noticed that One A Day® now offers a prenatal multivitamin product in one single softgel per serving, in addition to a multivitamin tablet/liquid gel as found in One A Day® Women’s Prenatal. Are you going to continue to offer One A Day® Women’s Prenatal consisting of the tablet and liquid gel?

Yes, One A Day® will now offer both products.

Why did One A Day® introduce One A Day® Prenatal 1, a prenatal multivitamin in a single soft gel form in addition to One A Day® Women’s Prenatal, a product that contains a multivitamin tablet and DHA/EPA liquid gel per serving?

One A Day® wanted to give expectant mothers options in terms of swallowability. Some women prefer to take just one pill and may prefer the softgel form over tablets. Other women would rather take two smaller pills.

How does the size of the softgel, as found in One A Day® Women’s Prenatal 1, compare to the size of the multivitamin tablet or DHA/EPA liquid gel as found in One A Day® Women’s Prenatal?

The One A Day® Prenatal 1 softgel is larger than either the multivitamin tablet or the DHA/EPA liquid gel in One A Day® Women’s Prenatal.

Can I cut or crush the One A Day® Women’s Prenatal 1 softgel?

The One A Day® Women’s Prenatal 1 softgel should not be cut or crushed.

Is there a difference in price between the new One A Day® Women’s Prenatal 1 multivitamin and the existing One A Day® Women’s Prenatal?

No, the list price for the 30 ct size of the new One A Day® Women’s Prenatal 1 softgel is the same as the list price for the 30 ct + 30 ct size of One A Day® Women’s Prenatal.

Are there any differences in the ingredients contained in the new One A Day® Prenatal 1 softgel and the ingredients contained in One A Day® Women’s Prenatal?

Yes, there are differences. The new One A Day® Women’s Prenatal 1 softgel contains less calcium than One A Day® Women’s Prenatal (200 mg vs. 300 mg of calcium) in order to be able to fit all the ingredients into one softgel per serving. In addition, the new One A Day® Women’s Prenatal 1 softgel contains 15 mg of sodium while One A Day® Women’s Prenatal contains less than 10 mg per serving.

Couple's Pack

One A Day® Men’s Pre-Conception Health Multivitamin Frequently Asked Questions

What does "Pre-Conception Health" mean?

"Pre-Conception" is the time before your partner becomes pregnant – when you may be actively trying to get pregnant or just thinking about starting the process. Before pregnancy is actually the best time for both you and your partner to prepare your bodies

I already take a complete multivitamin – why should I take this instead?

One A Day® Men’s Pre-Conception Health Multivitamin contains powerful antioxidants – Vitamins C, E, Selenium, Zinc and Lycopene - to support healthy sperm

How is One A Day® Men’s Pre-Conception Health Multivitamin different from One A Day Men’s Health Multivitamin?

One A Day® Men’s Pre-Conception Health Multivitamin has higher levels of key powerful antioxidants to support sperm health.

Would One A Day® Men’s Pre-Conception Health replace my current multivitamin?

Yes – in addition to having higher levels of key powerful antioxidants to support sperm health, One A Day Men’s Pre-Conception Health is a complete multivitamin. So you only need to take one multivitamin.

Can I take One A Day Men’s Pre-Conception Health in addition to my regular multivitamin?

While taking One A Day Men’s Pre-Conception Health, there is no need to take your regular multivitamin. You can return to your regular multivitamin once conception occurs.

When should I start taking One A Day Men’s Pre-Conception Health Multivitamin? When should I stop?

Men can benefit by taking One A Day Men’s Pre-Conception Health Multivitamin for at least 3 months before, and while trying, to conceive. You can continue to take this multivitamin for as long as you like, although you may choose to stop once conception occurs. If you do choose to stop, we recommend that you continue with One A Day Men’s Health Multivitamin.

Can I take One A Day Men’s Pre-Conception Health Multivitamin even after we conceive?

Yes, you can continue to take this multivitamin after you conceive. And in the spirit of camaraderie, it may make sense to continue as long as your partner is taking her prental multivitamin. When you do decide to stop taking One A Day Men’s Pre-Conception Health Multivitamin, we recommend switching to One A Day Men’s Health Multivitamin, to continue your vitamin regimen.

Is One A Day Men’s Pre-Conception Health only for men who have fertility issues?

No. Recent studies suggest a clear link between antioxidant levels and healthy sperm. And up to 85% of men fall short in getting key antioxidants like Vitamin C (46%) and Vitamin E (85%) from food alone. So most men can benefit from taking this product.

Is One A Day Men’s Pre-Conception Health only for couples who have been trying to conceive for a while?

No, in fact, men can benefit from taking this product at least three months, and women at least one month before they actually begin trying to conceive.

How do I know if I need One A Day Men’s Pre-Conception Health?

Up to 85% of men fall short in getting key antioxidants like Vitamin C (46%) and Vitamin E (85%) from food alone – and recent studies suggest a clear link between antioxidant levels and healthy sperm. So it’s very likely that you can benefit from taking this product.

Can I buy the Men’s Pre-Conception Health Multivitamin alone (not just in this double pack with the PreNatal multivitamin)?

At this time, the Men’s Pre-Conception Health Multivitamin is only available in the twin pack with the Women’s Prenatal Multivitamin. But this is a great way to ensure that you both take your vitamins daily – as you can make it a habit to take your vitamins together.

Why do I need lycopene when we’re trying to conceive?

Lycopene is a key antioxidant associated with sperm health

One A Day® Pre-Pregnancy Couple’s Pack Frequently Asked Questions

What does “Pre-Pregnancy” mean? When should we start taking these multivitamins?

"Pre-Pregnancy" is the time before you become pregnant – when you may be actively trying to get pregnant or just thinking about starting the process. Before pregnancy is actually the best time for both you and your partner to prepare your bodies.

I already take a different prenatal multivitamin than One A Day. Can I buy just One A Day Men’s Pre-Conception Health Multivitamin for my partner?

At this time, the Men’s Pre-Conception Health Multivitamin is only available in the twin pack with the Women’s Prenatal Multivitamin. But this is a great way to ensure that you both take your vitamins daily – as you can make it a habit to take your vitamins together.

I already take a prenatal multivitamin. Is it okay to change brands?

If you are taking a PreNatal that was recommended by your OB/GYN, you might want to check with her/him first. But in general, there should be no problem in switching your PreNatal. Also, you should know that One A Day PreNatal is the #1 OB/GYN recommended PreNatal multivitamin brand.

If I am pregnant and don’t know it, can I/we take these?

Yes, in fact, it is recommended by the CDC to begin taking folic acid, for example in a prenatal multivitamin, at least one month before you become pregnant.

What can I tell my partner about the benefits of One A Day Men’s Pre-Conception Multivitamin?

This is about the two of you, together, doing everything you can to give your baby the best possible start. For him, recent studies have suggested a clear link between antioxidant levels and sperm health. But up to 85% of men fall short in getting key antioxidants like Vitamin C (46%) and Vitamin E (85%) from food alone. One A Day Men’s Pre-Conception Health Multivitamin is specially designed to help him get the nutrients he may need at this time.

Is there a difference between this One A day Prenatal Multivitamin and the other/regular One A Day Prenatal Multivitamins?

The Prenatal Multivitamin in the Couple’s Pack is exactly the same as our Prenatal 1 (1 pill with both vitamins and DHA).

Should my partner and I take these at the same time? When should we start/how long do we need to take them?

It’s a great idea for you and your partner to take your vitamins at the same time, if that works with your schedules. Otherwise, it’s no problem to take them individually when it’s convenient for each of you. You can start at least three months before you begin trying to conceive. Your partner can stop once you conceive, while you should continue throughout your pregnancy, and through lactation, if you are breastfeeding.

Should I switch to a prenatal multivitamin after I get pregnant?

This is a prenatal multivitamin. The only difference is that One A Day wants to make it easy for you and your partner to take your vitamins together, before you become pregnant. This will help you to give your baby the best possible start with folic acid. It’s been shown that adequate folate in healthful diets may reduce a woman’s risk of having a child with a brain or spinal cord defect.

Customer Service Only

Can I buy One A Day Men’s Pre-Conception Health Multivitamin by itself (not just in this double pack with the PreNatal multivitamin)?

At this time, One A Day Men’s Pre-Conception Health Multivitamin is only available in the twin pack with One A Day Women’s PreNatal. But this is a great way to ensure that you both take your vitamins daily – as you can make it a habit to take your vitamins together.

Is there a version of the Pre-Pregnancy Couples Pack with the One A Day Prenatal Gummy Multivitamin?

At this time, the Pre-Pregnancy Couples Pack does not have a gummy option.