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Corex Dx Syrup

Manufacturer: Pfizer Ltd
Medicine composition: Chlorpheniramine, Dextromethorphan
Prescription vs.OTC: Prescription by Doctor not required

Corex falls under the category of antihistamines. This is used to treat runny nose, chest congestion, sinus pressure, watery eyes, sneezing, itching sensations in the throat and nose, allergies, upper respiratory problems, and hay fever.

Corex can cause a few side effects in people. Sometimes, these side effects are mild and can go away on their own. Other times, they can be severe and you may need medical attention in order to get rid of them. Some of these side effects include breathing problems, skin rashes, dizziness, dry mouth, vomiting, drowsiness.

dry cough

Chest congestion



In addition to its intended effect, Corex Dx Syrup may cause some unwanted effects too. In such cases, you must seek medical attention immediately. This is not an exhaustive list of side effects. Please inform your doctor if you experience any adverse reaction to the medication.


Moderate Less Common


Moderate Less Common


Moderate Less Common

Skin rash.

Moderate Less Common

Is It safe with alcohol?

Corex Dx Syrup is not safe with alcohol. If you experience certain symptoms such as stomach bleeding or ulcers, then you must speak to your doctor immediately.

Are there any pregnancy warnings?

No, Corex Dx Syrup is not safe for pregnant women as it can affect the foetus

Are there any breast-feeding warnings?

No, Corex Dx Syrup is not safe for breastfeeding women as it can affect the baby

Is it safe to drive while on this medicine?

As some of the side effects of this pill include drowsiness, it is not advisable to drive after taking this medication.

Does this affect kidney function?

Patients who have impaired kidney function should not take Corex Dx Syrup as it can lead to more kidney problems.

Does this affect liver function?

Patients who have impaired liver function should not take Corex Dx Syrup as it can lead to more liver problems, including liver failure.

How long is the duration of effect?

The duration of effect lasts for 6 hours.

What is the onset of action?

The onset of action occurs anytime between 30 minutes to 1 hour after taking it.

Is it habit forming?

There are no habit forming tendencies reported with this.

Below is the list of medicines, which have the same composition, strength and form as Corex Dx Syrup , and hence can be used as its substitute.
Mankind Pharma Ltd
Knoll Pharmaceuticals Ltd
Pfizer Ltd

Are there any missed dose instructions?

If you miss a dose, you should take one as soon as you remember that you’ve missed the dose.

Are there any overdose instructions?

If you have overdosed on the pill, you must consult your doctor immediately. Certain signs of overdose include fast heartbeat, weakness, fainting and confusion.

Corex Dx Syrup is a first-generation antihistamine, which is used to prevent the allergic symptoms from conditions such as urticaria and rhinitis. This drug binds to the histamine H1 receptor, which prevents the action from endogenous histamine.
Whenever you take more than one medicine, or mix it with certain foods or beverages, you"re at risk of a drug interaction.

Interaction with Disease



It can have negative interactions with certain diseases. These include asthma, impaired kidney function, and gastrointestinal toxicity.

Interaction with Alcohol



When taken with alcohol, this medication can increase the patients risk of developing stomach ulcers and bleeding.

Ques: What is Corex dx syrup?

Ans: Corex DX syrup is medication which has Chlorpheniramine Maleate, Dextromethorphan and Menthol as active elements present in it. This syrup performs its action by reducing activity in the brain that causes coughing, obstructing H1-receptor sites on tissues; temporarily relieving minor pain. It is used to treat conditions such as hay fever, allergy, pain in arthritis, pain in tendons, etc.

Ques: What is Corex dx syrup used for?

Ans: "Corex DX syrup is a medication which is used for the treatment, control, and prevention of conditions such as:
  1. Common cold
  2. Dry cough
  3. Itchy throat/skin
  4. Hay fever
  5. Back pain
  6. Bruising
  7. Cramping
  8. Pain in shoulder joint
  9. Anaphylactic shock
  10. Pain in muscle strains or sprains
  11. Allergy
  12. Watery eyes
  13. Rhinitis
  14. Urticaria
  15. Pain in arthritis
  16. Pain in tendons

Ques: What are the side effects of Corex dx syrup?


Corex DX syrup is a medication which has some commonly reported side effects. These side effects may or may not occur always and some of them are rare but severe. If you observe any of the below mentioned side effects, contact your doctor immediately.

A complete list of side effects caused by Corex DX syrup are as follows:

  1. Breathing problems
  2. Muscular hypotonia
  3. Skin rashes
  4. Feeling drowsy
  5. Drowsiness
  6. Diarrhea
  7. Blurred vision
  8. Hypotension
  9. Painful urination
  10. Changes in appetite
  11. Age-related deficits in motor function
  12. Nausea
  13. Ataxia
  14. Abdominal pain
  15. Contact dermatitis
  16. Condition of involuntary eye movement
  17. Sleep disorder
  18. Coma
  19. Irregularities in heart rhythm
  20. Vertigo
  21. Respiratory issues
  22. Dizzy head
  23. Dry mouth
  24. Urge to vomit
  25. Cheerfulness
  26. Headache
  27. Vomiting
  28. Stomach pain
  29. Fits
  30. Excited or confused
  31. Constipation
  32. Dizziness
  33. Gastrointestinal disturbances
  34. Feeling nervous
  35. Tightness in chest
  36. Muscular weakness
  37. Ringing in ears

Ques: Can Corex Dx Syrup be used for temporarily relief of cough caused by common cold, flu, or other conditions and common cold?

Ans: Yes, Corex Dx Syrup is a medication which can be used for temporary relief of cough caused by common cold, flu, or other conditions and common cold. Do not consume Corex DX syrup for temporary relief of cough caused by common cold, flu, or other conditions and common cold without consulting first with your doctor. It is a prescribed medication which should only be consumed on a prescription.

Ques: How long do I need to use corex dx syrup before I see improvement of my conditions?

Ans: This medication should be consumed, till the complete eradication of disease. Thus it is advised to use, till the time directed by your doctor and moreover taking this medication longer than it was prescribed, can also cause inadequate effect on the patient. So please consult your doctor.

Ques: At what frequency do I need to use corex dx syrup ?

Ans: This medication is generally used once or twice a day, as the time interval upto which this medication has an impact, is around 12 to 24 hours, but it is not the standard frequency, for using this medication. It is advised to consult your doctor for the dosage, as the frequency also depends on the patient's condition.

Ques: Should I use corex dx syrup empty stomach, before food or after food?

Ans: This medication is commonly taken orally from mouth and the action of salts involved in this medication, do not depend on using it pre-meal or post-meal. It is advised to consult a doctor before use and take it at a fixed time in a the day.

Ques: What are the instructions for storage and disposal of corex dx syrup?

Ans: This medication contains salts, which are suitable to store at room temperature and keeping this medication above or below that, can cause inadequate effect. Protect it from moisture and light. Keep this medication away, from the reach of children. It is advised to dispose the expired or unused medication, for avoiding its inadequate effect.
What are you using Corex Dx Syrup for?
itching of the throat
runny nose
sinus congestion
sinus pressure
How much was the improvement?
How long did it take before seeing improvement?
Within 2 hours
More than 2 days
Within a day
Within 6 hours
Within 2 days
How frequently did you take this medicine?
Twice a day
Thrice a day
Once a day
Not taking on daily level
Four times A Day
How did you take this medicine?
With Food
With or without food
Empty stomach
What were the side effects of this medicine?
Increased heart rate
Heart beat irregular
Increased blood pressure
Disclaimer: The information produced here is best of our knowledge and experience and we have tried our best to make it as accurate and up-to-date as possible, but we would like to request that it should not be treated as a substitute for professional advice, diagnosis or treatment.

Lybrate is a medium to provide our audience with the common information on medicines and does not guarantee its accuracy or exhaustiveness. Even if there is no mention of a warning for any drug or combination, it never means that we are claiming that the drug or combination is safe for consumption without any proper consultation with an expert.

Lybrate does not take responsibility for any aspect of medicines or treatments. If you have any doubts about your medication, we strongly recommend you to see a doctor immediately.

Popular Questions & Answers

Suffering from dry cough ad cold from past three days. Please suggest me which med should I take? I am having tusQ. Dx syrup for now.

Homeopath, Sindhudurg
Homoeopathic treatment- stodal cough syrup 1 spoonful 3 times bio combination no 5 cold cough- 4 pills 3 times for 8 days and revert back.
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Is it okay to use 4 quin- dx eye drops again from last time's prescription if the eyes get stye again?

MD - Homeopathy, BHMS
Homeopath, Vadodara
Is it okay to use 4 quin- dx eye drops again from last time's prescription if the eyes get stye again?
Yes you can use it. It is temporary solution. Better take homoeopathic treatment for permanent cure without side effects. You can consult me through Lybrate.

I am daily user of corex. I want to get rid of this bad habit. Please suggest me.

Reparenting Technique, BA, BEd
Psychologist, Bangalore
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1 person found this helpful

Still 15 days onwards I am suffering from dry cough, please suggest what should I do, already I had taken syrup one is benadryl Dr. and tusk dx but still not good.

DHMS (Hons.)
Homeopath, Patna
Hello, Lybrate user, you should go for the cause of cough, first. It might be due to cold, tonsillitis & laryngitis. You should drink lukewarm water. •Gargle, twice with hot saline water. •Tk, steam, twice. •Avoid, cold intake, exposure to cold cl...
2 people found this helpful

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Content Details
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Table of Content
About Corex Dx Syrup
When is Corex Dx Syrup prescribed?
What are the contraindications of Corex Dx Syrup ?
What are the side effects of Corex Dx Syrup ?
Key highlights of Corex Dx Syrup
What are the substitutes for Corex Dx Syrup ?
What are the dosage instructions?
How does medicine works?
What are the interactions for Corex Dx Syrup ?
Corex Dx Syrup Frequently Asked Questions (FAQs):