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PhD (Pharmacology), PGDPRA
Reviewed By
MD Pharmacology, MBBS
Last updated
05 Dec 2023 | 06:14 PM (IST)

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Introduction of Phenrex Syrup

Phenrex Syrup is a combination medicine used in the treatment of dry cough. It relieves allergy symptoms such as runny nose, stuffy nose, throat irritation, sneezing, watery eyes and congestion or stuffiness.

Phenrex Syrup is a combination of first generation H1 antihistaminic and opioid medicines.

Uses of Phenrex Syrup

Benefits of Phenrex Syrup

In Dry cough

A dry cough is a cough where no phlegm or mucus is produced. It may cause a tickling sensation or itching in the throat and may be due to cold, flu, allergies or throat irritants. Phenrex Syrup suppresses severe dry cough and gives you relief from an itchy throat. Apart from this, it also reduces symptoms of allergy like watery eyes, sneezing and runny nose. Along with taking Phenrex Syrup, gargling with warm salt water and having ginger or honey can help you manage dry cough.

Side effects of Phenrex Syrup

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Phenrex

  • Nausea
  • Vomiting
  • Constipation
  • Sleepiness
  • Lightheadedness
  • Dizziness
  • Breathlessness
  • Sweating

How to use Phenrex Syrup

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Measure it with a measuring cup and take it by mouth. Shake well before use. Phenrex Syrup may be taken with or without food, but it is better to take it at a fixed time.

Safety advice

Alcohol
UNSAFE
Phenrex Syrup may cause excessive drowsiness with alcohol.
Pregnancy
CONSULT YOUR DOCTOR
Phenrex Syrup may be unsafe to use during pregnancy. Although there are limited studies in humans, animal studies have shown harmful effects on the developing baby. Your doctor will weigh the benefits and any potential risks before prescribing it to you. Please consult your doctor.
Breast feeding
SAFE IF PRESCRIBED
Phenrex Syrup is probably safe to use during breastfeeding. Limited human data suggests that the drug does not represent any significant risk to the baby.
Larger doses or prolonged use of Phenrex Syrup may cause sleepiness and other effects in the baby
Driving
UNSAFE
Phenrex Syrup may cause side effects which could affect your ability to drive.
As Phenrex Syrup may cause dizziness, blurred vision or the inability to think clearly.
Kidney
SAFE IF PRESCRIBED
Phenrex Syrup is probably safe to use in patients with kidney disease. Limited data available suggests that dose adjustment of Phenrex Syrup may not be needed in these patients. Please consult your doctor.
Use of Phenrex Syrup may cause excessive sleepiness in patients with end stage kidney disease.
Liver
CAUTION
Phenrex Syrup should be used with caution in patients with liver disease. Dose adjustment of Phenrex Syrup may be needed. Please consult your doctor.

All substitutes

For informational purposes only. Consult a doctor before taking any medicines.
Phenrex Syrup
₹36.8/Syrup
Dialex DC 4 mg/10 mg Syrup
Dr Reddy's Laboratories Ltd
₹77/syrup
5% costlier
₹169.82/syrup
131% costlier
Ascoril C Syrup
Glenmark Pharmaceuticals Ltd
₹159/syrup
116% costlier
Grilinctus CD Syrup
Franco-Indian Pharmaceuticals Pvt Ltd
₹86.63/syrup
18% costlier
₹100.8/syrup
37% costlier

Quick tips

Phenrex Syrup

  • Phenrex Syrup is prescribed to get relief from a dry cough.
  • Take exactly as directed by your doctor or on the label. Do not increase the dosage or take for longer than is recommended.
  • Inform your doctor if you have a history of stomach ulcers or asthma.
  • Consult your doctor if you do not see any improvement and have cough for more than 7 days.

Fact Box

Habit Forming
Yes
Therapeutic Class
RESPIRATORY

Patient concerns

Patient concerns

arrow
What is a dry and productive cough syrup for baby
Dr. Gopal Samdani
Paediatrics
In dry cough cough suppressants are used. In productive cough mucolytics are used.
i have dry cough & cold so which syrup i take levosalbutamol / terbutaline I am a MR in fdc i have salbutol-ls syrup
Dr. Sfurti Mann
Diabetology
U can take montair LC and cough suppressant if it's dry cough
arrow

FAQs

Phenrex Syrup

Can the use of Phenrex Syrup cause sleepiness or drowsiness?

Yes, Phenrex Syrup may make you feel drowsy or sleepy. Avoid driving a car, operating machinery, working at heights or participating in potentially dangerous activities until you know how the medicine affects you. Inform your doctor if you experience such episodes while you are taking this medicine.

What are the instructions for storage and disposal of Phenrex Syrup?

Keep this medicine in the container it came in, tightly closed. Store it according to the instructions mentioned on the pack or label. Dispose of the unused medicine. Make sure it is not consumed by pets, children and other people.

Are there any serious side effects associated with the use of Phenrex Syrup?

Serious side effects with Phenrex Syrup are uncommon and rare. Tell your doctor as soon as possible if you notice allergic reactions, skin rash or peeling, mouth ulcers, breathing problems, unexplained bleeding, recurrent fevers or infections, vision disturbances, fast or irregular heartbeat.

Will Phenrex Syrup be more effective if taken in more than recommended dose?

No, taking a higher than the recommended dose may not be more effective, rather it may increase the chances of having serious side effects and toxicity. If the recommended doses do not relieve your symptoms or there is an increased severity of your symptoms while taking this medicine, please consult your doctor.

Can I breastfeed while taking Phenrex Syrup?

No, it is not advisable to breastfeed while using Phenrex Syrup. This medicine contains Chlorpheniramine, an antihistamine, which can pass into the breast milk and may harm the baby. Inform your doctor if you are breastfeeding a baby.

Can the use of Phenrex Syrup cause constipation?

Yes, the use of Phenrex Syrup can cause constipation. To prevent constipation, eat high-fiber foods like vegetables, fruits and cereals. Drink plenty of water. Exercise regularly by engaging in activities like swimming, jogging or taking a short walk. Talk to your doctor if constipation persists for a long time.

Can I drink alcohol while taking Phenrex Syrup?

No, avoid drinking alcohol while taking Phenrex Syrup. Drinking alcohol will increase the risk of serious side effects caused by Phenrex Syrup.

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Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

References

  1. Medscape. Chlorpheniramine + Codeine. [Accessed 18 Apr. 2019] (online) Available from:External Link
  2. Chlorpheniramine + Codeine. Colorado Springs: Provident Pharmaceuticals. [Accessed 18 Apr. 2019] (online) Available from:External Link
  3. Codeine phosphate and Chlorpheniramine maleate. Irvine, California: Nexgen Pharma, Inc.; 1985 [revised Jan. 2016]. [Accessed 18 Apr. 2019] (online) Available from:External Link

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