Multivitamins

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Multivitamins

What is a multivitamin?

Multivitamins are used to provide vitamins that are not absorbed through food. Multivitamins are also used to treat vitamin deficiencies (vitamin deficiencies) caused by illness, pregnancy, poor diet, digestive disorders, and many other conditions.

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

Side effects of multivitamins

If necessary, get emergency medical helpSigns of an allergic reaction:hives; difficulty breathing; Swelling of your face, lips, tongue, or throat.

When taken as directed, no serious side effects are to be expected from multivitamin preparations. Common side effects may include:

  • abdominal pain;

  • Headache; or

  • unusual or unpleasant taste in the mouth.

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

Warnings

Seek emergency medical attention if you think you have taken too many multivitamins.An overdose of vitamins A, D, E, or K can cause serious or life-threatening side effects. Certain minerals found in a multivitamin can also cause severe overdose symptoms if you take too much of them.

Before you take this medicine

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

Before taking multivitamins, tell your doctor about all your medical conditions and allergies.

If you are pregnant or breastfeeding, ask a doctor before using this medicine.

Your dosage needs may vary during pregnancy.Some vitamins and minerals can harm an unborn baby if taken in large doses.You may need to take a prenatal vitamin specifically designed for pregnant women.

How should I take multivitamins?

Use exactly as directed on the label or as prescribed by your doctor.

Never take more than the recommended dose of a multivitamin. Avoid taking more than one multivitamin product at the same time unless directed to do so by your doctor. Taking similar vitamin products at the same time can result in a vitamin overdose or serious side effects.

Many multivitamin products also contain minerals such as calcium, iron, magnesium, potassium and zinc. Minerals (especially taken in large doses) can cause side effects such as tooth discoloration, increased urination, stomach bleeding, uneven heart rate, confusion, and muscle weakness or a feeling of weakness. Read the label of any multivitamin product you take to make sure you know what it contains.

Take your multivitamin with a full glass of water.

You must chew the chewable tablet before swallowing it.

Place the sublingual tablet under your tongue and allow it to dissolve completely. Do not chew a sublingual tablet or swallow it whole.

Measure liquid medicine carefully. Use the dosing syringe provided or a medication dosing device (not a kitchen spoon).

Take multivitamins regularly to get the most benefit.

Store at room temperature, protected from moisture and heat. Do not freeze.

Store multivitamins in the original container. Storing multivitamins in a glass container may reduce the effectiveness of the medication.

What happens if I miss a dose?

Take the medicine as soon as possible, but skip the missed dose if it is almost time for the next dose. Do not take two doses at the same time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help hotline at 1-800-222-1222.An overdose of vitamins A, D, E, or K can cause serious or life-threatening side effects. Certain minerals can also cause severe overdose symptoms if you take too much of them.

Symptoms of overdose may include stomach pain, vomiting, diarrhea, constipation, loss of appetite, hair loss, peeling skin, tingling in or around the mouth, menstrual changes, weight loss, severe headache, muscle or joint pain, severe back pain, blood in the urine, pale skin, and easy bruising or bleeding.

What should I avoid when taking multivitamins?

Avoid taking more than one multivitamin product at the same time unless directed to do so by your doctor. Taking similar vitamin products at the same time can result in a vitamin overdose or serious side effects.

Avoid regularly using salt substitutes in your diet if your multivitamin contains potassium. If you are on a low-salt diet, consult your doctor before taking a vitamin or mineral supplement.

Do not take multivitamins with milk, other dairy products, calcium supplements, or antacids that contain calcium. Calcium can make it harder for your body to absorb certain ingredients in the multivitamin.

What other drugs affect multivitamins?

Multivitamins can interact with certain medications or affect how medications work in your body. Ask a doctor or pharmacist if it is safe for you to take multivitamins if you also take:

  • tretinoin or isotretinoin;

  • an antacid;

  • an antibiotic;

  • a diuretic or “water pill”;

  • heart or blood pressure medications;

  • a sulfa drug; or

  • NSAIDs (nonsteroidal anti-inflammatory drugs) – ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam and others.

This list is not complete. Other medications may affect multivitamins, including prescription and over-the-counter medications, vitamins, and herbal products. Not all possible drug interactions are listed here.

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More information

Remember to keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medicine only for the prescribed indication.

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Multivitamins