dexbrompheniramine and phenylephrine (Ala-Hist PE)

Brand Names: Ala-Hist PE

Generic Name: dexbrompheniramine and phenylephrine

What is dexbrompheniramine and phenylephrine (Ala-Hist PE)?

Dexbrompheniramine is an antihistamine. Phenylephrine is a decongestant.

Dexbrompheniramine and phenylephrine is a combination medicine used to treat runny or stuffy nose, sneezing, itching, watery eyes, and sinus congestion caused by allergies, the common cold, or the flu.

Dexbrompheniramine and phenylephrine may also be used for purposes not listed in this medication guide.

What are the possible side effects of dexbrompheniramine and phenylephrine (Ala-Hist PE)?

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

Stop using this medicine and call your doctor at once if you have:

  • fast or irregular heartbeats;
  • confusion, hallucinations;
  • a seizure;
  • ringing in your ears; or
  • little or no urination.

Common side effects may include:

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.

What is the most important information I should know about dexbrompheniramine and phenylephrine (Ala-Hist PE)?

Do not use this medicine if you have used an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

Do not use this medicine only to make a child sleepy.

What should I discuss with my healthcare provider before taking dexbrompheniramine and phenylephrine (Ala-Hist PE)?

You should not use this medicine if you are allergic to dexbrompheniramine or phenylephrine.

Do not use dexbrompheniramine and phenylephrine if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

Ask a doctor or pharmacist if this medicine is safe to use if you have:

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

How should I take dexbrompheniramine and phenylephrine (Ala-Hist PE)?

Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use until your symptoms clear up.

Swallow the tablet whole and do not crush, chew, or break it.

Always follow directions on the medicine label about giving cough or cold medicine to a child. Do not use the medicine only to make a child sleepy. Death can occur from the misuse of cough or cold medicines in very young children.

Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.

Store at room temperature away from moisture and heat.

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What happens if I miss a dose (Ala-Hist PE)?

Since dexbrompheniramine and phenylephrine is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

What happens if I overdose (Ala-Hist PE)?

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

What should I avoid while taking dexbrompheniramine and phenylephrine (Ala-Hist PE)?

Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.

Ask a doctor or pharmacist before using other cough or cold medicines that may contain similar ingredients.

Drinking alcohol can increase certain side effects of dexbrompheniramine.

What other drugs will affect dexbrompheniramine and phenylephrine (Ala-Hist PE)?

Avoid using this medicine with other drugs that cause drowsiness or slow your breathing (such as opioid medicine, a muscle relaxer, or medicine for anxiety or seizures). Ask a doctor or pharmacist before using any other medication, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed in this medication guide.

Where can I get more information (Ala-Hist PE)?

Your pharmacist can provide more information about dexbrompheniramine and phenylephrine.


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.
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.

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Reviewed on 7/12/2021

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