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NoHist DM

Generic name: chlorpheniramine, dextromethorphan, and phenylephrine

Brand names: Balamine DM, Ed A-Hist DM, Gencontuss, Giltuss Allergy Plus, Giltuss Children's Allergy Plus, NoHist DM, Phenagil-CH, Alka-Seltzer Plus Cold and Cough

Used for common cold
Last updated November 3, 2026 0 views
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What is NoHist DM?

NoHist DM is a combination medicine that helps relieve cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.

NoHist DM may also be used for other reasons that are not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

How should I take NoHist DM?

Use exactly as directed on the label, or as prescribed by your doctor. Do not take NoHist DM more than what is recommended on the label. Cold or cough medicine is only for short-term use.

Your dose may need to change if you switch to a different brand, strength, or form of this medicine. Avoid medication errors by using exactly as directed on the label, or as prescribed by your doctor.

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

Measure liquid medicine with the supplied measuring device (not a kitchen spoon).

Call your doctor if your symptoms do not improve after 7 days, or if you have a fever, rash, or headaches.

Store at room temperature, away from moisture and heat. Keep the liquid medicine bottle tightly closed when not in use.

This section was rewritten for readability and reviewed for meaning.

Warnings

Do not use NoHist DM if you have taken an MAO inhibitor in the last 14 days. This includes isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

Do not use NoHist DM if you have taken an MAO inhibitor in the past 14 days. A serious drug interaction could happen. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, and tranylcypromine. Wait at least 14 days after stopping an MAO inhibitor before taking this medicine.

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

  • a chronic cough, or a cough with mucus;
  • breathing issues such as asthma or COPD;
  • high blood pressure or heart disease;
  • glaucoma;
  • urination problems caused by an enlarged prostate;
  • diabetes;
  • a thyroid condition; or
  • if you have recently used alcohol, sedatives, tranquilizers, or any other oral nasal decongestant or stimulant.

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

Do not give this medicine to a child younger than 6 years old without medical advice.

This section was rewritten for readability and reviewed for meaning.

NoHist DM 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.

NoHist DM may cause serious side effects. Stop using NoHist DM and call your doctor right away if you experience:

  • dizziness, nervousness, trouble sleeping (insomnia); or
  • a cough or stuffy nose that goes away and then comes back, or lasts more than 7 days.

Common side effects of NoHist DM may include:

  • drowsiness; or
  • agitation (especially in children).

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 the FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

What happens if I miss a dose?

NoHist DM is used as needed. If you miss a dose while on a dosing schedule, just skip it. Do not take two doses at once.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

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

Drinking alcohol with NoHist DM can cause side effects.

Avoid driving or doing dangerous activities until you know how this medicine will affect you. Your reactions could be impaired.

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

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect NoHist DM?

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). Inform your doctor about all other medicines you are using. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are mentioned here.

This section was rewritten for readability and reviewed for meaning.

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.