Prenatal vitamins are multivitamins and mineral supplements for use during pregnancy and nursing.

Treatment

To avoid stomach irritation, you can take prenatal vitamins
with food or with a full glass of water or milk, unless your
doctor directs you otherwise.

If you miss a dose of the prenatal vitamins, take the missed dose as soon as possible after you remember. However, if it is almost time for the next dose, do not take the missed dose at all; just return to your regular dosing schedule. Do not double the next dose.

Prenatal Vitamins Facts
Brand names (manufacturers): Prenatal-1 + Iron tablets (various manufacturers); Stuartnatal Plus (Wyeth-Ayerst)

Type of drug: Multivitamin and mineral supplement

Ingredients: Calcium, iron, folic acid, zinc, copper, niacin, riboflavin, thiamine, and vitamins A, D, E, B6, B12, and C

Dosage form: Tablets (200 mg, 250 mg, or 300 mg calcium;
60 mg, 65 mg, or 90 mg iron;
1.0 mg folic acid; 4,000 IU [international units] or 5,000 IU vitamin A; 400 IU vitamin D;
11 IU vitamin E; 1.5 mg thiamine; 3 mg riboflavin; 20 mg niacin; 10 mg vitamin B6;
12 mcg vitamin B12; 120 mg vitamin C; zinc, copper, and other ingredients)

Storage: Store the prenatal vitamins at room temperature in a tightly closed, light-resistant container. Do not refrigerate or freeze the vitamins.

Prenatal Vitamin Side Effects

Minor: Constipation, diarrhea, nausea, stomach upset, or vomiting. These side effects should disappear as your body adjusts to the prenatal vitamins.

To relieve constipation, increase the amount of fiber in your diet (fresh fruits and vegetables, salads, bran, and whole-grain breads), exercise, and drink more water (unless your doctor directs you to do otherwise).

Black stools are a normal consequence of iron therapy and do not indicate that a problem has developed from the vitamin therapy.

Major: Tell your doctor about any side effects that are persistent or particularly bothersome. IT IS ESPECIALLY IMPORTANT TO TELL YOUR DOCTOR about bloody or tarry stools or severe abdominal pain.

Prenatal Vitamin Interactions

Prenatal vitamins should not interact with other medications if they are used according to directions. However, be sure that your doctor knows about any medications or supplements that you are currently taking.

Prenatal Vitamin Warnings

  • Tell your doctor about unusual or allergic reactions you have had to any medications, especially to any vitamin, mineral, or iron products.

  • Be sure to tell your doctor if you have ever had bone disease, liver disease, kidney disease, or stomach ulcers.

  • Because prenatal vitamins may mask the symptoms of pernicious anemia, they should be used only under a doctor's supervision.
To learn more about the topics on this page, try the following links:
  • To learn more about pregnancy and delivery, try How Pregnancy Works.
  • To find out more about other prenatal procedures, go to How Prenatal Testing Works.
  • Our Vitamins page can lead you to all sorts of information about vitamins, how they work, and how much you need in your diet.
This information is solely for informational purposes. IT IS NOT INTENDED TO PROVIDE MEDICAL ADVICE. Neither the Editors of Consumer Guide (R), Publications International, Ltd., the author nor publisher take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading or following the information contained in this information. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Before undertaking any course of treatment, the reader must seek the advice of their physician or other health care provider.