Prevent an allergic reaction from happening at school.

doxylamine

Pronunciation

Generic Name: doxylamine (dox IL a meen)
Brand Name: Aldex AN, Unisom, Nytol Maximum Strength

What is doxylamine?

Doxylamine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Antihistamines can cause drowsiness and are sometimes used a sleep aids.

Doxylamine is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms.

Doxylamine is also used as a short-term treatment for sleep problems (insomnia).

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

What is the most important information I should know about doxylamine?

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What should I discuss with my health care provider before taking doxylamine?

You should not use doxylamine if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have other medical conditions, especially:

  • glaucoma;

  • an enlarged prostate;

  • problems with urination; or

  • asthma, bronchitis, emphysema, or other chronic lung disease.

FDA pregnancy category B. Doxylamine is not expected to be harmful to an unborn baby. Do not use this medicine without a doctor's advice if you are pregnant.

Doxylamine may pass into breast milk and may harm a nursing baby. Antihistamines may also slow breast milk production. Do not use this medicine without a doctor's advice if you are breast-feeding a baby.

How should I take doxylamine?

Use 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. This medicine is usually taken only for a short time until your symptoms clear up.

Do not use doxylamine to treat insomnia in a child younger than 12 years old. Ask a doctor before using this medicine to treat cold or allergy symptoms in a child younger than 6 years old. Always ask a doctor before giving a cold or allergy medicine to a child. Death can occur from the misuse of these medicines in very young children.

Take this medicine with food or milk if it upsets your stomach.

The chewable tablet must be chewed before you swallow it.

To treat insomnia, it is best to take doxylamine only when you can devote several hours to sleep. Follow your doctor's instructions.

Call your doctor if your cold or allergy symptoms do not improve after 7 days of treatment, or if your sleep problems do not improve after 2 weeks of treatment.

This medication can cause you to have unusual results with allergy skin tests. Tell any doctor who treats you that you are taking an antihistamine.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

When treating insomnia, if it is almost your normal waking hour, skip the missed dose and wait until you are ready for bed again.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include severe forms of some of the side effects listed in this medication guide.

What should I avoid while taking doxylamine?

This medicine may cause blurred vision and may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Ask a doctor or pharmacist before using any other cold, cough, allergy, or sleep medicine. Antihistamines are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain drug. Check the label to see if a medicine contains an antihistamine.

Drinking alcohol can increase certain side effects of doxylamine.

Avoid becoming overheated or dehydrated during exercise and in hot weather. Doxylamine can decrease sweating and you may be more prone to heat stroke.

Doxylamine 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.

Call your doctor at once if you have:

  • confusion, hallucinations;

  • severe dizziness or drowsiness; or

  • little or no urinating.

Common side effects may include:

  • blurred vision;

  • dry mouth, nose, or throat;

  • constipation; or

  • mild dizziness or 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.

See also: Side effects (in more detail)

Doxylamine dosing information

Usual Adult Dose for Allergic Rhinitis:

Doxylamine 5 mg oral tablet, chewable:
10 mg orally every 4 to 6 hours not to exceed 6 doses daily.

Usual Adult Dose for Allergic Conjunctivitis:

Doxylamine 5 mg oral tablet, chewable:
10 mg orally every 4 to 6 hours not to exceed 6 doses daily.

Usual Adult Dose for Insomnia:

12 years of age and older: 25 mg orally 30 minutes before bed

Maximum dose: Take once daily or as directed by physician

Comments: Do not use 25 mg doxylamine in children under 12 years of age

Usual Pediatric Dose for Allergic Rhinitis:

Doxylamine 5 mg oral tablet, chewable:
12 years or older: 10 mg orally every 4 to 6 hours not to exceed 6 doses daily
6 years to under 12 years: 5 mg orally every 4 to 6 hours not to exceed 6 doses daily

Usual Pediatric Dose for Allergic Conjunctivitis:

Doxylamine 5 mg oral tablet, chewable:
12 years or older: 10 mg orally every 4 to 6 hours not to exceed 6 doses daily
6 years to under 12 years: 5 mg orally every 4 to 6 hours not to exceed 6 doses daily

What other drugs will affect doxylamine?

Ask a doctor or pharmacist before using this medicine if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.

Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking doxylamine with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.

Where can I get more information?

  • Your pharmacist can provide more information about doxylamine.
  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 3.02. Revision Date: 2014-01-27, 3:46:47 PM.

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