Drug Search
Enter a Drug Name Pick from Common Drugs
powered by Talix

Generic Name: chlorpheniramine/dextromethorp/phenylephrine

This medicine is used to treat the symptoms of allergies and the common cold
View All Brands
Rondex-Dm Drops, Histadecdm, Poly-Tussin Dm, Trital Dm, Dec-Chlorphen Dm, Atuss Dm, Pe-Hist Dm, Sildec-Pe Dm Drops, Reme Tussin Dm, Cardec Dm Drops, Robitussin Pediatric Cough & Cold Nighttime, Atuss Dr, Neo Dm Drops, Maxiphen Adt, Norel Dm, Dm-Pe-Chlor, Relahist-Dm, Cardec Dm, Uni-Tuss Dm, C-Phen Dm, Cardec Dm (Chlorpheniramine/Dextromethorphan/Phenylephrine), Ceron-Dm, Cerose Dm, Mintuss Dr, Liquituss R-Dm, Corfen-Dm, Rondex-Dm, Sonahist-Dm, Tri-Vent Dpc, Nasohist-Dm, Quartuss Dm, Coldtuss-Dr, Tussplex Dm, Donatussin Dm Drops, Chlorpheniramine/Dextromethorphan/Phenylephrine, Dec-Chlorphen Dm Drops, Pd-Cof Drops, Sildec-Pe Dm, Ed A-Hist Dm, Zotex-12d, De-Chlor Dr, Tussar Dm, Nohist-Dmx, Cp Dec-Dm Drops, Dex Pc, Cp Dec Dm, P Chlor Dm, Accuhist Pdx Drops, C-Phen Dm Drops, De-Chlor Dm, Ceron-Dm Drops, Pd-Cof

What is this medicine?

CHLORPHENIRAMINE; DEXTROMETHORPHAN; PHENYLEPHRINE (klor fen IR a meen; dex troe meth OR fan; fen il EF rin) is a combination of an antihistamine, a cough suppressant, and a decongestant. This medicine is used to treat the symptoms of allergies and the common cold. This medicine will not treat an infection.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • diabetes
  • eczema
  • glaucoma
  • heart disease
  • high blood pressure
  • lung or breathing disease, like asthma
  • phenylketonuria
  • stomach ulcer
  • taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate in last 14 days
  • thyroid disease
  • trouble passing urine
  • an unusual or allergic reaction to chlorpheniramine; dextromethorphan; phenylephrine, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Do not cut, crush or chew this medicine. Take your medicine at regular intervals. Do not take it more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 6 years old for selected conditions, precautions do apply.

Patients over 60 years old may have a stronger reaction to this medicine and need a smaller dose.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
  • medicines for cold, cough, or allergy
  • medicines for weight loss
  • procarbazine
  • some medicines for migraine headaches
  • stimulant medicines for attention disorders, weight loss, or to stay awake

This medicine may also interact with the following medications:

  • alcohol
  • barbiturates like phenobarbital
  • mecamylamine
  • medicines for chest pain, heart disease, high blood pressure or heart rhythm problems
  • medicines for depression, anxiety, or psychotic disturbances
  • medicines for sleep
  • reserpine
  • some herbal or nutritional supplements
  • some medicines for Parkinson's disease
  • some medicines for pain

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not start to get better or if they get worse. If you have a fever, skin rash, or persistent headache, see your doctor. Do not take this medicine for more than one week unless directed by your doctor. Do not take more than the recommended dose.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. To reduce the risk of dizzy or fainting spells, do not stand or sit up quickly, especially if you are an older patient. Alcohol may increase dizziness and drowsiness. Avoid alcoholic drinks.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

1 2

All visitors to AARP.org should seek expert medical care and consult their own physicians for any specific health issues. Read this disclaimer in its entirety.
Note: This information is not intended to cover all possible uses, precautions, interactions, or adverse effects for this drug. If you have question about the drug(s) you are taking, check with your health care professional.
Symptom Search
Enter your symptoms in our Symptom Checker to find out possible causes of your symptoms. Go.
Drug Interaction Checker
Enter any list of prescription drugs and see how they interact with each other and with other substances. Go.
Pill Identifier
Enter its color and shape information, and this tool helps you identify it. Go.