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Carbinoxamine

Generic name: carbinoxamine

Brand names: Karbinal ER, Ryvent, Histex PD, Histex CT, Carbinoxamine PD, Pediox, Histex I/E, Pediatex, Palgic, Histex Pd 12, Carboxine, Cordron NR, Pediatex 12, Arbinoxa, Mintex PD

Last updated November 1, 2026 0 views
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What is carbinoxamine?

Carbinoxamine is an antihistamine used to treat runny or stuffy nose, sneezing, itching, watery eyes, hives, skin rash, itching, and other allergy symptoms.

Carbinoxamine is for adults and children who are at least 2 years old.

Carbinoxamine may also be used for other reasons not mentioned in this medication guide.

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How should I take carbinoxamine?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Follow all directions when giving carbinoxamine 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 syringe or a dose-measuring device (not a kitchen spoon).

Call your doctor if your symptoms do not improve, or if they get worse.

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

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Warnings

Use only as directed. Inform your doctor if you are using other medicines, have other medical conditions, or have allergies.

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Before taking this medicine

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

Do not use carbinoxamine if you are also taking an MAO inhibitor such as isocarboxazid, linezolid, methylene blue injection, phenelzine, or tranylcypromine.

Not approved for use by anyone younger than 2 years old.

Tell your doctor if you have ever had:

  • glaucoma;
  • a stomach ulcer;
  • a blockage in your digestive tract (stomach or intestines);
  • a thyroid disorder;
  • heart problems, high blood pressure;
  • liver or kidney disease;
  • asthma or sulfite allergy;
  • an enlarged prostate;
  • urination problems; or
  • low blood pressure.

You should not breastfeed while using carbinoxamine.

Tell your doctor if you are pregnant.

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Carbinoxamine side effects

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

Carbinoxamine may cause serious side effects. Stop using carbinoxamine and call your doctor right away if you have:

  • a light-headed feeling, as if you might pass out;
  • little or no urination;
  • wheezing or tightness in your chest;
  • pounding heartbeats or fluttering in your chest; or
  • pale skin, easy bruising, or bleeding.

Side effects such as dizziness and confusion may be more likely in older adults.

Common side effects of carbinoxamine may include:

  • dry mouth, nose, or throat;
  • drowsiness or dizziness;
  • loss of coordination; or
  • upset stomach.

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.

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What happens if I miss a dose?

Carbinoxamine is taken as needed. If you are following a dosing schedule and miss a dose, skip it. Do not take two doses at the same time.

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What happens if I overdose?

Seek emergency medical help or call the Poison Help line at 1-800-222-1222. An overdose can be deadly, particularly for a child.

Signs of an overdose may include severe drowsiness or feeling restless, seeing things that are not there (hallucinations), enlarged pupils, or seizures (convulsions).

Do not drive or engage in dangerous activities until you understand how carbinoxamine affects you. Your reactions may be slowed down.

Do not drink alcohol.

Talk to a doctor or pharmacist before using other cough or cold medicines that might have similar ingredients.

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What other drugs will affect carbinoxamine?

Ask a doctor or pharmacist before using any other medicines that can cause drowsiness (such as opioid medication, sleep medicine, a muscle relaxer, or medicine for anxiety or seizures). Tell your doctor about all other medicines you use. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here.

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Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.