Frequently Asked Questions

Multivitamins can help to support a healthy lifestyle by providing some of the vitamins and minerals your body may not be getting from your diet. Your body needs essential vitamins such as A, C, B12, D and E. If you don't follow a balanced eating plan, you may fall short in getting the vitamins and minerals you need from food alone.

Make One A Day^® Multivitamins a part of your healthy lifestyle today!

To find out which One A Day^® multivitamin might be right for you try our interactive quiz.

Find Your One A Day

Each One A Day^® multivitamin is formulated to support your health during different stages of life.

You can choose a One A Day^® multivitamin based on your gender, age group, format preference (tablet or gummy), and the health benefits you may want to support.

To find out which One A Day^® multivitamin might be right for you try our interactive quiz.

Find Your One A Day

Bayer cannot recommend the splitting or crushing of One A Day® multivitamin tablets.

Yes, all One A Day^® multivitamins contain gelatin as a non-medicinal ingredient. The gelatin is sourced from pig and/or cow.

According to the One A Day^® multivitamin product label, gluten is not listed as a medicinal or non-medicinal ingredient. As raw materials for each product are sourced from various suppliers, Bayer Inc. cannot guarantee that an excipient of, or chemical used in the manufacture of One A Day^® multivitamins has not come into contact with gluten at some stage. Therefore, we cannot guarantee that One A Day^® multivitamins are completely free of gluten.

We cannot make recommendations regarding your treatment or provide suggestions that would influence your care. All decisions regarding treatment are the responsibility of both, you and/or your Healthcare Professional (e.g. Physician, Pharmacist, etc.). If you have any concerns about your treatment, please discuss with a Healthcare Professional.

We cannot make recommendations regarding your treatment or provide suggestions that would influence your care. All decisions regarding treatment are the responsibility of both, you and/or your Healthcare Professional (e.g. Physician, Pharmacist, etc.). If you have any concerns about your treatment, please discuss with a Healthcare Professional.

We cannot make recommendations regarding your treatment or provide suggestions that would influence your care. All decisions regarding treatment are the responsibility of both, you and/or your Healthcare Professional (e.g. Physician, Pharmacist, etc.). If you have any concerns about your treatment, please discuss with a Healthcare Professional.

Yes, we recommend that you take your One A Day^® multivitamin with food to reduce the chance of stomach discomfort. Please read the directions for use on each product. Please see comment above.

You may take your One A Day^® multivitamin any time of the day, as long as you take it with food. It is also suggested that you take your One A Day^® multivitamin at the same time every day so that it becomes part of your daily routine. Please refer to above regarding taking vitamins with food

One A Day^® can be used until the last day of the month in the year indicated by the expiry date, when stored as recommended. Bayer Inc. does not recommend the use of any product beyond the expiry date.

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.*

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.

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.*

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

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.

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.*

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

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.

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.

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

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.

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.