What is multivitamin, prenatal?

Prenatal vitamins are a combination of many different vitamins that are normally found in foods and other natural sources.

Prenatal vitamins are used to provide the additional vitamins needed during pregnancy. Minerals may also be contained in prenatal multivitamins.

Prenatal vitamins may also be used for other purposes not listed in this medication guide.


Many vitamins can cause serious or life-threatening side effects if taken in large doses. Do not take more of this medication than directed on the label or prescribed by your doctor.

Before taking prenatal vitamins, tell your doctor about all of your medical conditions.

Prenatal vitamins can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Avoid taking any other multivitamin product within 2 hours before or after you take your prenatal vitamins. Taking similar vitamin products together at the same time can result in a vitamin overdose or serious side effects.

Avoid the regular use of salt substitutes in your diet if your multivitamin contains potassium. If you are on a low-salt diet, ask your doctor before taking a vitamin or mineral supplement.

Do not take this medication with milk, other dairy products, calcium supplements, or antacids that contain calcium. Calcium may make it harder for your body to absorb certain ingredients of the prenatal vitamin.

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Seek emergency medical attention if you think you have used too much of this medicine. An overdose of vitamins A, D, E, or K can cause serious or life-threatening side effects and can also harm your unborn baby. Certain minerals contained in a prenatal multivitamin may also cause serious overdose symptoms or harm to the baby if you take too much.

Overdose symptoms may include stomach pain, vomiting, diarrhea, constipation, loss of appetite, hair loss, peeling skin, tingly feeling in or around your mouth, changes in menstrual periods, weight loss, severe headache, muscle or joint pain, severe back pain, blood in your urine, pale skin, and easy bruising or bleeding.

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

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Side effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

When taken as directed, prenatal vitamins are not expected to cause serious side effects. Less serious side effects may include:

  • upset stomach;
  • headache; or
  • unusual or unpleasant taste in your mouth.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

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Vitamin and mineral supplements can interact with certain medications, or affect how medications work in your body. Before taking a prenatal vitamin, tell your doctor if you also use:

  • diuretics (water pills);
  • heart or blood pressure medications;
  • tretinoin (Vesanoid);
  • isotretinoin (Accutane, Amnesteen, Clavaris, Sotret);
  • trimethoprim and sulfamethoxazole (Cotrim, Bactrim, Gantanol, Gantrisin, Septra, TMP/SMX); or
  • an NSAID (non-steroidal anti-inflammatory drug) such as ibuprofen (Motrin, Advil), naproxen (Aleve, Naprosyn), diclofenac (Cataflam, Voltaren), etodolac (Lodine), indomethacin (Indocin), ketoprofen (Orudis), and others.

This list is not complete and there may be other medications that can interact with or be affected by prenatal vitamins. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Other Names

Ami-Natal Plus One Improved, Aminatal Plus, Aminatal Plus New Formula, Aminatal Plus One, Aminate, Aminate with 90 mg Iron, Anemagen OB, Bright Beginnings, Cal-nate, Cenogen Ultra, Chromagen OB, Duet, Duet Chewable, Duet DHA, Duet DHA EC, Elemental Iron-90, Equi-Natal Care, Equi-Natal M, Equi-Natal Plus, Equi-Natal Rx, Equi-Natal Z, Equinatal 90, Fem-Natal, Femnatal, Ferrex PC Forte, Hi-Nate 90, Icar Prenatal, Icare Prenatal Rx, Inatal Advance, Inatal Ultra, Lactocal-F, Marnatal-F Plus, Materna, Maternal 90, Maternity plus Beta Carotene, Maternity-90, Maxinate, Mission Prenatal, Mission Prenatal FA, Mission Prenatal HP, Mission Prenatal Rx, Mynatal, Mynatal FC, Mynatal PN, Mynatal PN Forte, Mynatal Plus, Mynatal Rx, Mynatal Ultracap, Mynatal Z, Mynate 90 Plus, Natachew, Natafort, NatalCare CFE 60, Natalcare(obsolete), Natalfirst, Natalins, Natalins Rx, Natarex, Natelle, Natelle C, Natelle Prefer, Natelle-ez, Neevo, Neo-Forte, Nestabs, Nestabs CBF, Nestabs FA, Nestabs Rx, Niferex PN Forte, Niferex-PN, Norlac RX, NovaStart, Novanatal, Novastart (obsolete), O-Cal Prenatal, O-Cal-FA, OB Complete, Ob-20, Obegyn, Obnate 90, Obtrex, OptiNate, Pan OB Forte, Par-F, Pramilet FA, Pre-H-Cal, Precare, Precare Conceive, Precare Premier, Premesis Rx, PrenaFirst, Prenatabs CBF, Prenatabs FA, Prenatabs OBN, Prenatabs Rx, Prenatal 1 Plus 1, Prenatal 19, Prenatal AD, Prenatal H, Prenatal Low Iron, Prenatal Multivitamins with Docusate, Prenatal Plus, Prenatal Plus Iron, Prenatal Plus with Beta-Carotene, Prenatal S, Prenatal-U, Prenate Advance, Prenate Advanced Formula, Prenate Elite, Prenate GT, Prenate Ultra, Prenavite, Prenavite FC, Prenavite PC, Prenazyme 1+1, Preterna, Primacare, Primacare One, Select-OB, Strongstart, Stuart Prenatal with Beta Carotene, Stuartnatal Plus, Stuartnatal Plus 3, Tandem OB, Ternamar, Trinate, Ultra-Natal, Vernate, Vernate Advanced, Vinatal 600, Vinate 90, Vinate AZ, Vinate Advanced (New Formula), Vinate GT, Vinate Good Start, Vinate II (New Formula), Vinate M, Vitafol PN, Vitafol-OB, Vitafol-OB+DHA, Vitamed Prenatal Formula, Vitelle Nestabs OTC, Vynatal 1 Plus 1, Vynatal F.A., Zenate, Zenate Advanced Formula, Zenate Prenatal, Zitamin, multivitamin, prenatal, prenatal multivitamin, Advance Care Plus, Cal-Nate, CareNatal DHA, Citracal Prenatal 90+DHA, Citracal Prenatal + DHA, Citracal Prenatal Rx, CitraNatal 90 DHA, CitraNatal Assure, CitraNatal DHA, CitraNatal Rx, ComBi Rx, Complete Natal, CompleteNate, Complete-RF, Dualvit OB, Edge OB, Folbecal, Folcaps Care One, Foltabs, Foltabs plus DHA, Gesticare, Gesticare DHA, Maternity, Maternity Vitamin Low Iron, Multifol Plus, Multinatal Plus, Natacaps, Natafolic-OB, Natafolic-PN, NatalCare, NatalCare Advanced, NatalCare Advanced-RF, Natalcare Pic, Natalcare Pic Forte, Natalcare Plus, Natalcare Rx, NatalCare Three, Natatab CFe, Natatab FA, Natatab Rx, Natelle Plus with DHA, Neevo DHA, New Advanced Formula Prenatal Z, NutriNate, Nutrispire, OB Complete with DHA, OB Natal One, PreferaOB, PrenaCare, PrenaPlus, Prenatal 1 Plus 1 (Low Iron), Prenatal Elite, Prenatal MR 90, Prenatal MR 90 Fe, Prenatal MTR with Selenium, Prenatal Multivitamins, Prenatal Plus with 27 mg Iron, Prenatal Rx, Prenatal Rx 1, Prenatal Z Advanced Formula, Prenate 90, Prenate DHA, Prenate Elite Plus Iron, PreNexa, Previte Rx, PrimaCare, PrimaCare Advantage, PrimaCare One, Pruet DHA, Pruet DHA EC, Renate, Renate DHA, Renate DHA Extra, RE OB 90 Plus DHA, RE OB Plus DHA, RightStep, Se-Care, Se-Care Conceive, Select-OB+DHA, Se-Natal 90, Se-Natal One, Tandem DHA, TriCare, Trinatal Rx, UltimateCare One, Ultra NatalCare, Verotin-BY, Verotin-GR, Vinatal Forte, Vinate AZ Extra, Vinate C, Vinate Calcium, Vinate Care, Vinate IC, Vinate III, Vinate One, Vinate PN Care, Vinate Ultra, Vitaphil, Vitaphil Aide, Vitaphil Plus DHA, Vitaphil Plus DHA 90, Vitaspire, and Viva DHA

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