Category- Allopathy
Medicine Highlights
| Uses | 1. To treat symptoms of common cold 2. To treat dry cough 3. To treat allergic symptoms such as itching and watery eyes |
| Common Side Effects | 1. Drowsiness or sleepiness 2. Dizziness or lightheadedness 3. Dry mouth, nose, or throat 4. Nausea or vomiting 5. Constipation 6. Blurred vision 7. Mild stomach upset |
| Additional Information | 1. Avoid consuming alcohol and tobacco with this medicine 2. Drink plenty of fluids to help loosen mucus and get rid of your cough |
| Storage | 1- The medicine should be stored at room temperature 2- Keep away from sunlight and moisture 3- Keep away from the reach of children |
| How to Take This Medicine | This medicine is meant to be taken orally. |
Chlorpheniramine + Dextromethorphan Uses
Chlorpheniramine + Dextromethorphan is a decongestant, and antitussive combination. This medicine is used to prevent and treat conditions like:
- Common cold
- Dry cough and suppress the urge to cough.
- Allergic symptoms such as itching and watery eyes caused by histamine release
Directions for use
- Take this medicine exactly as prescribed by your doctor, at the same time each day.
- Do not stop taking this medicine without your doctor’s approval, even if you feel better.
- If you forget to take this medicine, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose.
Chlorpheniramine + Dextromethorphan side effects
More Common
- Drowsiness or sleepiness
- Dizziness or lightheadedness
- Dry mouth, nose, or throat
- Nausea or vomiting
- Constipation
- Blurred vision
- Mild stomach upset
Less Common
- Fast or irregular heartbeat
- Difficulty urinating
- Confusion or hallucinations
- Severe allergic reaction (rash, itching, swelling, trouble breathing)
How Chlorpheniramine + Dextromethorphan works
Chlorpheniramine maleate and dextromethorphan hydrobromide work together to relieve symptoms of cough and cold. Chlorpheniramine is an antihistamine that blocks the action of histamine, a natural substance in the body responsible for causing sneezing, runny nose, and watery eyes. Dextromethorphan is a cough suppressant that acts on the cough center in the brain to reduce the urge to cough. Together, they help control coughing and ease allergy or cold-related discomfort.
Safety Measures and Warning
Allergy/Hypersensitivity
If you have ever had an allergic reaction to Chlorpheniramine, Dextromethorphan (such as rash, itching, swelling, dizziness, or difficulty breathing), do not take this medicine. Inform your doctor before use.
Heart problems or High Blood Pressure
If you have high blood pressure, heart disease, or irregular heartbeat, avoid this medicine because it can raise blood pressure and strain the heart.
Liver Problems
People with liver problems should not take this medicine because Dextromethorphan and Chlorpheniramine are processed by the liver, which can make side effects worse.
Glaucoma
If you have narrow-angle glaucoma, avoid using this medicine, as Chlorpheniramine can increase pressure inside the eyes.
Asthma
If you have asthma, chronic cough, or other serious breathing problems, talk to your doctor before taking this medicine because Dextromethorphan may make it harder to clear mucus.
Prostate Problems or Urinary Retention
Men with enlarged prostate or difficulty urinating should avoid this medicine, as Chlorpheniramine may worsen these symptoms.
Pregnancy and Breastfeeding
As safety information is limited for both mother and fetus, it should be used only if prescribed by a doctor.
Chlorpheniramine + Dextromethorphan Interaction with Food Product
Skip heavy meals and grapefruit juice, as they can affect the working of the medicine. Avoid alcohol and too much caffeine, as they can cause dizziness or fast heartbeat. Drink plenty of water to stay hydrated and ease coughing.
Chlorpheniramine + Dextromethorphan Interaction with Other Medicines
Avoid taking Chlorpheniramine + Dextromethorphan with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal:
Chlorpheniramine + Dextromethorphan Chemical Structure
IUPAC (International Union of Pure and Applied Chemistry)/ Chemical name
Dextromethorphan: (1S,9S,10S)-4-methoxy-17-methyl-17-azatetracyclo[7.5.3.0 heptadeca-2(7),3,5-triene
Chlorpheniramine: 3-(4-chlorophenyl)-N,N-dimethyl-3-pyridin-2-ylpropan-1-amine
Intake routine/cycle
Daily dose
Take Chlorpheniramine + Dextromethorphan exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor.
Missed Dose
If you forget to take your medicine, take the medication as soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage.
Overdose
Do not take Chlorpheniramine + Dextromethorphan more than the prescribed dose per day. Overdosing may cause side effects such as nausea, vomiting, stomach pain, dizziness, headache, low blood pressure, drowsiness, restlessness, or in rare cases, seizures and breathing difficulty. Seek immediate medical attention if any of these occur.
Storage
- Store the medicine at room temperature
- Keep away from sunlight and moisture
- Keep out of reach of children
Chlorpheniramine + Dextromethorphan Summary
Chlorpheniramine + Dextromethorphan is a combination medicine commonly used to relieve symptoms of cough, cold, and allergies such as runny nose, sneezing, watery eyes, and dry cough. Chlorpheniramine is an antihistamine that works by blocking the action of histamine, a chemical responsible for allergic reactions, helping to reduce sneezing and nasal discharge. Dextromethorphan is a cough suppressant that acts on the cough center in the brain to decrease the urge to cough. Together, they help soothe throat irritation, control cough, and provide relief from common cold symptoms. It may cause drowsiness, dizziness, dry mouth, or mild stomach upset, so avoid alcohol and driving after taking it. This medicine should be used cautiously in people with asthma, liver, or heart problems, and only under medical advice during pregnancy or breastfeeding.
FAQ’s
What are the uses of dextromethorphan, chlorpheniramine maleate syrup?
It is used to treat cough, cold, runny nose, sneezing, nasal congestion, and throat irritation caused by allergies or infections.
What are the uses for chlorpheniramine maleate?
It is used to relieve allergy symptoms such as runny nose, sneezing, watery eyes, and itching.
How does dextromethorphan work?
Dextromethorphan works by acting on the brain’s cough center to reduce the urge to cough. It doesn’t treat the cause of the cough but helps control frequent or irritating coughs, making it easier to rest and recover.
Can dextromethorphan be taken during pregnancy?
Only if prescribed by a doctor. It is generally considered low risk in recommended doses, but self-medication is not advised. Always consult your doctor before taking it while pregnant.
Reference
- PubChem. (+-)-Chlorpheniramine [Internet]. Nih.gov. PubChem; 2025 [cited 2025 Oct 8]. Available from
- PubChem. Dextromethorphan [Internet]. Nih.gov. PubChem; 2025 [cited 2025 Oct 8]. Available from
- Dextromethorphan hydrobromide | DrugBank Online [Internet]. go.drugbank.com. Available from
- drugbank. Chlorpheniramine [Internet]. go.drugbank.com. 2024. Available from
- 1mg.com. Chlorpheniramine Maleate + Dextromethorphan Hydrobromide: View Uses, Side Effects and Medicines | 1mg [Internet]. 1mg. 2021 [cited 2025 Nov 1]. Available from
- ApolloPharmacy [Internet]. Apollopharmacy.in. 2019 [cited 2025 Nov 1]. Available from
Authors
Pranathi is a final year Pharm D student at Chalapathi Institute of Pharmaceutical Sciences. She loves learning and applying her knowledge in pharmacy and has a passion for writing, which allows her to express ideas clearly and creatively. She enjoys combining her technical skills with her love for writing and communication to make a meaningful impact. Currently she is working on a research paper about “Consanguineous marriages and its impact on children’s health” which will be published by the end of 2025.