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What is Corex?

Corex Syrup is used for Common cold, Cough, Itchy throat/skin, Hay fever, Allergy, Allergic and other conditions. Corex Syrup may also be used for purposes not listed in this medication guide.
Corex Syrup contains Chlorpheniramine Maleate and Codeine Phosphate as active ingredients.
Corex Syrup works by blocking H1-receptor sites on tissues; broken down by the liver into morphine;
Pfizer manufactures Corex Syrup.
Detailed information related to Corex Syrup's uses, composition, dosage, side effects and reviews is listed below.

Corex Syrup Uses

Corex Syrup is used for the treatment, control, prevention, & improvement of the following diseases, conditions and symptoms:
References: 1, 2
Learn more: Uses

Corex Syrup Working, Mechanism of Action and Pharmacology

Corex Syrup improves the patient's condition by performing the following functions:
References: 2, 3

Corex Syrup - Composition and Active Ingredients

Corex Syrup is composed of the following active ingredients (salts)
Please note that this medicine may be available in various strengths for each active ingredient listed above.

Corex Syrup - Side-effects

The following is a list of possible side-effects that may occur from all constituting ingredients of Corex Syrup. This is not a comprehensive list. These side-effects are possible, but do not always occur. Some of the side-effects may be rare but serious. Consult your doctor if you observe any of the following side-effects, especially if they do not go away.
If you notice other side-effects not listed above, contact your doctor for medical advice. You may also report side-effects to your local food and drug administration authority.
References: 2, 4
Learn more: Side-effects

Corex Syrup - Precautions & How to Use

Before using Corex Syrup, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.). Some health conditions may make you more susceptible to the side-effects of the drug. Take as directed by your doctor or follow the direction printed on the product insert. Dosage is based on your condition. Tell your doctor if your condition persists or worsens. Important counseling points are listed below.
  • Acute pancreatitis
  • Addison’s disease
  • Ask a doctor before use if you have any breathing problems, glaucoma, or difficulty urinating
  • Asthma
  • Avoid alcohol and other sedatives while on this medication
  • Avoid driving a car or operating machinery
References: 2, 2, 5, 5

Corex Syrup - Drug Interactions

If you use other drugs or over the counter products at the same time, the effects of Corex Syrup may change. This may increase your risk for side-effects or cause your drug not to work properly. Tell your doctor about all the drugs, vitamins, and herbal supplements you are using, so that you doctor can help you prevent or manage drug interactions. Corex Syrup may interact with the following drugs and products:
  • Alcohol
  • Antianxiety agents
  • Anticholinergics
  • Antiemetics
  • Antihistamines
  • Antipsychotics
References: 2, 5
Learn more: Interactions

Corex Syrup - Contraindications

Hypersensitivity to Corex Syrup is a contraindication. In addition, Corex Syrup should not be used if you have the following conditions:
  • Acute or severe bronchial asthma
  • Hypercarbia
  • Hypersensitivity
  • Hypersensitivity to codeine
  • Paralytic ileus
  • Postoperative pain management in children who have undergone tonsillectomy or adenoidectomy
References: 2
Learn more: Contraindications

Where to Buy Corex Syrup

Corex Syrup - Frequently asked Questions

  • Is Corex Syrup safe to consume or apply when pregnant?
    • Chlorpheniramine Maleate: Please consult with your doctor for case-specific recommendations.
    • Codeine Phosphate: No
    References: 2 5
  • Is Corex Syrup safe while breastfeeding?
    • Chlorpheniramine Maleate: Please discuss the risks and benefits with your doctor.
    • Codeine Phosphate: Please discuss the risks and benefits with your doctor.
    References: 2 5
  • Can Corex Syrup be used for common cold and cough?
    Yes, common cold and cough are among the most common reported uses for Corex Syrup. Please do not use Corex Syrup for common cold and cough without consulting first with your doctor. Click here and view survey results to find out what other patients report as common uses for Corex Syrup.
  • How long do I need to use Corex Syrup before I see improvement of my conditions? website users have reported same day and 1 week as the most common time it takes before they saw improvements in their conditions. These times may not be reflective of what you may experience or how you should use this medicine. Please consult with your doctor to check how long do you need to use Corex Syrup. Click here and view survey results to find out what other patients report as time for effectiveness for Corex Syrup.
  • At what frequency do I need to use Corex Syrup? website users have reported twice a day and once a day as the most common frequency of using Corex Syrup. Please follow your doctor's advice on how often you need to Corex Syrup. Click here and view survey results to find out what other patients report as frequency of using Corex Syrup.
  • Should I consume Corex Syrup empty stomach, before food or after food? website users have most commonly reported consuming Corex Syrup after food. However, this may not be reflective of how you should consume this medicine. Please follow your doctor's advice on how you should use this medicine. Click here and view survey results to find out what other patients report as timing of using Corex Syrup.
  • Is it safe to drive or operate heavy machinery when consuming?
    If you experience drowsiness, dizziness, hypotension or a headache as side-effects when using Corex Syrup medicine then it may not be safe to drive a vehicle or operate heavy machinery. One should not drive a vehicle if using the medicine makes you drowsy, dizzy or lowers your blood-pressure extensively. Pharmacists also advise patients not to drink alcohol with medicines as alcohol intensifies drowsiness side-effects. Please check for these effects on your body when using Corex Syrup. Always consult with your doctor for recommendations specific to your body and health conditions.
  • Is this medicine or product addictive or habit forming?
    Most medicines don't come with a potential for addiction or abuse. Usually, government's categorizes medicines that can be addictive as controlled substances. Examples include schedule H or X in India and schedule II-V in the US. Please consult the product package to make sure that the medicine does not belong to such special categorizations of medicines. Lastly, do not self-medicate and increase your body's dependence to medicines without the advice of a doctor.
  • Can it be stopped immediately or do I have to slowly ween off consumption?
    Some medicines need to be tapered or cannot be stopped immediately because of rebound effects. Please consult with your doctor for recommendations specific to your body, health and other medications that you may be using.

Other important Information on Corex Syrup

Missing a dose

In case you miss a dose, use it as soon as you notice. If it is close to the time of your next dose, skip the missed dose and resume your dosing schedule. Do not use extra dose to make up for a missed dose. If you are regularly missing doses, consider setting an alarm or asking a family member to remind you. Please consult your doctor to discuss changes in your dosing schedule or a new schedule to make up for missed doses, if you have missed too many doses recently.
References: 7, 8, 9, 10

Overdosage of Corex Syrup

  • Do not use more than prescribed dose. Taking more medication will not improve your symptoms; rather they may cause poisoning or serious side-effects. If you suspect that you or anyone else who may have overdosed of Corex Syrup, please go to the emergency department of the closest hospital or nursing home. Bring a medicine box, container, or label with you to help doctors with necessary information.
  • Do not give your medicines to other people even if you know that they have the same condition or it seems that they may have similar conditions. This may lead to overdosage.
  • Please consult your physician or pharmacist or product package for more information.
References: 11, 12, 13

Storage of Corex Syrup

  • Store medicines at room temperature, away from heat and direct light. Do not freeze medicines unless required by package insert. Keep medicines away from children and pets.
  • Do not flush medications down the toilet or pour them into drainage unless instructed to do so. Medication discarded in this manner may contaminate the environment. Please consult your pharmacist or doctor for more details on how to safely discard Corex Syrup.
References: 14, 15, 16, 17

Expired Corex Syrup

  • Taking a single dose of expired Corex Syrup is unlikely to produce an adverse event. However, please discuss with your primary health provider or pharmacist for proper advice or if you feel unwell or sick. Expired drug may become ineffective in treating your prescribed conditions. To be on the safe side, it is important not to use expired drug. If you have a chronic illness that requires taking medicine constantly such as heart condition, seizures, and life-threatening allergies, you are much safer keeping in touch with your primary health care provider so that you can have a fresh supply of unexpired medications.
References: 18, 19

Dosage Information

Please consult your physician or pharmacist or refer to product package.

Questions - Corex Syrup

News and Updates

Latest news and updates related to Corex Syrup. Subscribe to get latest posts via email or subscribe to a RSS feed.
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Corex Syrup - Packages and Strengths

Corex Syrup is available in the following packages and strengths
Corex Syrup - Packages: 50ML Syrup, 100ML Syrup, 100 ml, 50 ml
Corex Syrup - Strengths: 50ML, 100ML, 4MG+10MG

Corex Syrup - Manufacturers

The medicine is manufactured by the following companies

Corex Syrup - Demographic Information


  1. Postgrad Med J. 1982 Jul; 58(681): 422–423. PMCID: PMC2426514 Controlled trial of terfenadine and chlorpheniramine maleate in perennial rhinitis - Accessed: October 12, 2016.
  2. DailyMed. CODEINE SULFATE- codeine sulfate tablet. Accessed 11/18/2016. - Accessed: October 12, 2016.
  3. Carlsson, A.; Linqvist M. (1969). "Central and peripheral monoaminergic membrane-pump blockade by some addictive analgesics and antihistamines". Journal of Pharmacy and Pharmacology. 21 (7): 460–464. doi:10.1111/j.2042-7158.1969.tb08287.x. PMID 4390069. - Accessed: October 12, 2016.
  4. Hasenöhrl, R. U.; Weth, K.; Huston, J. P. (1999). "Intraventricular infusion of the histamine H1 receptor antagonist chlorpheniramine improves maze performance and has anxiolytic-like effects in aged hybrid Fischer 344×Brown Norway rats". Experimental Brain Research. 128 (4): 435–440. doi:10.1007/s. PMID 10541737. - Accessed: October 12, 2016.
  5. Dailymed label: CHLORPHENIRAMINE MALEATE- chlorpheniramine maleate tablet. - Accessed: October 12, 2016.
  6. Dailymed label: CHLORPHENIRAMINE MALEATE- chlorpheniramine maleate tablet. - Accessed: October 12, 2016.
  7. - Accessed: July 14, 2016.
  8. - Accessed: July 3, 2016.
  9. Cancer.Net (2014). - Accessed: July 3, 2016.
  10. Schachter, S.C., Shafer, P. O. &; Sirven, J.I. (2013). - Accessed: May 28, 2016.
  11. National Institute of Drug Abuse (2010). - Accessed: July 21, 2016.
  12. eMedicinehealth (2016). - Accessed: July 21, 2016.
  13. Centers for Disease Control and Prevention (2010). - Accessed: July 21, 2016.
  14. Centers for Disease Control and Prevention. December 12, 2011. - Accessed: June 10, 2016.
  15. The Center for Improving Medication Management and the National Council on Patient Information and Education. - Accessed: June 10, 2016.
  16. U.S. Food and Drug Administration. December 24, 2013. - Accessed: June 10, 2016.
  17. World Health Organization: - Accessed: July 1, 2016.
  18. Lyon, R. C., Taylor, J. S., Porter, D. A., et al. (2006) Stability profiles of drug products extended beyond labeled expiration dates. Journal of Pharmaceutical Sciences; 95:1549-60 - Accessed: July 3, 2016.
  19. Harvard Medical School (2016). - Accessed: May 1, 2016.

Cite this page

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APA Style Citation

  • Corex Syrup - Uses, Side-effects, Reviews, and Precautions - Pfizer - - India. (n.d.). Retrieved January 19, 2018, from

MLA Style Citation

  • "Corex Syrup - Uses, Side-effects, Reviews, and Precautions - Pfizer - - India" N.p., n.d. Web. 19 Jan. 2018.

Chicago Style Citation

  • "Corex Syrup - Uses, Side-effects, Reviews, and Precautions - Pfizer - - India" Accessed January 19, 2018.

Last updated date

This page was last updated on 1/17/2018.
This page provides information for Corex Syrup in English.
Read Reviews » Corex Syrup

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