Prenatal multivitamins are a combination of different vitamins normally found in foods and other natural sources. Prenatal multivitamins may also contain other ingredients.

Prenatal multivitamins are used to provide the additional vitamins and minerals needed before, during, and after pregnancy.

There are many brand forms of prenatal multivitamins available. Not all brands are listed on this medication guide.

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

You should not take prenatal multivitamins if you are allergic to it, or if you have:

• cirrhosis of the liver;
• vitamin B12 deficiency or pernicious anemia;
• iron overload disorder (hemochromatosis, hemosiderosis);
• Willson's disease;
• hemolytic anemia;
• pyridoxine responsive anemia; or
• if you are also taking mineral oil.

Keep this medicine out of the reach of children. An accidental overdose can be fatal to a child younger than 6 years old.

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

Prenatal multivitamins containing omega-3 fatty acids may cause bruising or bleeding if you also take blood thinners. Ask your doctor about your individual risk.

Before taking prenatal vitamins, tell each of your doctor about all your medical conditions, allergies, and all medicines you use.

Tell your doctor if you are pregnant or breastfeeding.

Use Natal Pnv (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

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

Common side effects may include:

• stomach pain or upset, constipation, nausea, vomiting, diarrhea;
• numbness, tingling, burning pain;
• swelling, rash, itching;
• changes in glucose levels;
• high blood cell counts;
• black or tarry stools;
• vision problems; or
• headache, drowsiness.

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.

Avoid taking an antibiotic medicine within 2 hours before or after you take prenatal multivitamins.

Avoid the regular use of potassium supplements or salt substitutes if your prenatal multivitamins contains potassium.

Avoid taking prenatal multivitamins with milk other dairy products, calcium supplements, or antacids that contain calcium.