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Chlorex-A 12

Generic name: chlorpheniramine, phenylephrine, and pyrilamineKLOR-fen-IR-a-meen, FEN-il-EF-rin, pir-IL-a-meen ]
Brand names: Chlorex-A 12, Conal, Nalex A 12, MyHist-PD, Phena-Plus, ... show all 8 brands
Drug class: Upper respiratory combinations

Medically reviewed by Drugs.com on Sep 1, 2023. Written by Cerner Multum.

What is Chlorex-A 12?

Chlorex-A 12 is a combination medicine used to relieve the symptoms of coughs, colds, and allergies.

Chlorex-A 12 may also be used for purposes not listed in this medication guide.

Chlorex-A 12 side effects

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

Chlorex-A 12 may cause serious side effects. Stop using Chlorex-A 12 and call your doctor at once if you have:

Serious side effects may be more likely in older adults.

Common side effects of Chlorex-A 12 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.

Warnings

You should not use Chlorex-A 12 if you have severe coronary artery disease, diabetes, overactive thyroid, asthma, pneumonia, or other breathing problems.

Do not use Chlorex-A 12 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, and tranylcypromine.

Do not give this medicine to a child younger than 6 years old. Misuse of this medicine may cause death in very young children.

Do not use this medicine to make a child sleepy.

Before taking this medicine

Do not use Chlorex-A 12 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, and tranylcypromine. Wait at least 14 days after stopping an MAO inhibitor before you take this medicine.

You should not use this medicine if you are allergic to chlorpheniramine, phenylephrine, pyrilamine, or to other decongestants, or if you have:

Tell your doctor if you have ever had:

Tell your doctor if you are pregnant or breastfeeding.

How should I take Chlorex-A 12?

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

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.

Do not give this medication to a child younger than 6 years old. Always ask a doctor before giving a cough or cold medicine to a child.

Follow all directions when giving Chlorex-A 12 to a child. Do not use the medicine to make a child sleepy. Misuse of this medicine may cause death in very young children.

Shake the oral suspension (liquid). Measure a dose with the supplied measuring device (not a kitchen spoon).

Store at room temperature away from moisture, heat, and light.

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What happens if I miss a dose?

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

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose can be fatal.

Overdose symptoms may include dry mouth, extreme drowsiness, confusion, ringing in your ears, tremors, seizure, dilated pupils, vomiting, and loss of consciousness.

What should I avoid while taking Chlorex-A 12?

Chlorex-A 12 may cause blurred vision and may impair your reactions. Avoid driving or hazardous activity until you know how this medicine will affect you.

Drinking alcohol with this medicine can cause side effects.

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

Chlorex-A 12 could make you sunburn more easily. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.

What other drugs will affect Chlorex-A 12?

Using Chlorex-A 12 with other drugs that make you drowsy or that slow your breathing can worsen this effect. Ask your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.

Other drugs may affect Chlorex-A 12, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

Does Chlorex-A 12 interact with my other drugs?

Enter other medications to view a detailed interaction report.

More about Chlorex-A 12 (chlorpheniramine / phenylephrine / pyrilamine)

Patient resources

Other brands

Conal, MyHist-PD, Nalex A 12, Phena-Plus, ... +3 more

Related treatment guides

Further information

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.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.