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Decolgen P Syrup

Written By Dr. Syeda Aafia, MBA, BDS
Reviewed By Dr. Rajeev Sharma, MBA, MBBS
Last updated on 31 Mar 2026 | 02:31 PM (IST)
Decolgen P Syrup is a medicine used in the treatment of common cold symptoms. It provides relief from symptoms such as headache, sore throat, runny nose, muscular pain, and fever.
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The content is shown in English
Decolgen P Syrup image
Decolgen P Syrup image

Product introduction

Decolgen P Syrup can be taken with or without food. The dose and duration will depend on the severity of your condition. You should keep taking the medicine even if you feel better until the doctor says it is alright to stop using it.

Using this medicine may cause a few common side effects such as nausea, vomiting, sleepiness, dizziness, and headache. If any of these side effects do not resolve with time or get worse, you should let your doctor know. Your doctor may be able to suggest ways of preventing or reducing the side effects. In general, you should try to use the smallest amount necessary to control your symptoms.


Before using the medicine, you should tell your doctor if you have any other medical conditions or disorders. To make sure it is safe, you should let your doctor know all the other medicines you are taking. Also, tell your doctor if you have any problems with the liver or kidneys. Avoid consumption of alcohol while on treatment with this medicine, as it may increase the chance of some side effects. Pregnant and breastfeeding women should consult their doctors first before using the medicine.

Uses of Decolgen P Syrup

Benefits of Decolgen P Syrup

Treatment of Common cold
Decolgen P Syrup helps relieve symptoms of common cold such as blocked nose, runny nose, watery eyes, sneezing, and congestion or stuffiness. It helps to loosen thick mucus, making it easier to cough out. This makes it easier for air to move in and out. It shrinks the blood vessels and provides rapid relief that lasts for several hours.

Side effects of Decolgen P 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 Decolgen P
  • Nausea
  • Headache
  • Insomnia (difficulty in sleeping)
  • Tachycardia
  • Palpitations
  • Fear
  • Anxiety
  • Restlessness
  • Tremors
  • Weakness
  • Dizziness

How to use Decolgen P 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. Decolgen P Syrup may be taken with or without food.

How Decolgen P Syrup works

Decolgen P Syrup is a combination of three medicines: chlorpheniramine, paracetamol, and phenylephrine, which relieve common cold symptoms. Chlorpheniramine is an antiallergic that relieves allergy symptoms like a runny nose, watery eyes, and sneezing. Paracetamol is an analgesic (pain reliever) and antipyretic (fever reducer). It blocks the release of certain chemical messengers in the brain that are responsible for pain and fever. Phenylephrine is a nasal decongestant that narrows the small blood vessels, providing relief from congestion or stuffiness in the nose.

Quick tips

  • Decolgen P Syrup helps relieve symptoms of cold and flu such as headache, sore throat, runny nose, muscular pain, and fever.
  • It may cause dizziness and sleepiness. Don't drive or do anything that requires mental focus until you know how it affects you.
  • Avoid consuming alcohol when taking this medicine, as it may cause excessive drowsiness.
  • Do not take it with any other medicine containing paracetamol (drugs for pain/fever or cough-and-cold) without asking your doctor first.
  • Inform your doctor if you are pregnant, planning to conceive, or breastfeeding.

Safety advice

Alcohol

Alcohol

UNSAFE
Do not drink alcohol while you are taking this medicine. Decolgen P Syrup may cause excessive drowsiness when taken with alcohol.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
The safety of Decolgen P Syrup during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Decolgen P Syrup may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
Driving

Driving

UNSAFE
Decolgen P Syrup may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

CAUTION
Decolgen P Syrup should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Use of Decolgen P Syrup may cause excessive sleepiness in patients with end stage kidney disease.
Liver

Liver

UNSAFE
Decolgen P Syrup is unsafe to use in patients with liver disease and should be avoided.
It should not be used in severe liver impairment.

Frequently asked questions

Decolgen P Syrup is a combination of three medicines: Chlorpheniramine, Paracetamol / Acetaminophen and Phenylephrine. This combination helps to relieve symptoms of cold like runny nose, watery eyes, fever and headache. Chlorpheniramine is an antiallergic. It relieves allergy symptoms like runny nose, watery eyes and sneezing. Paracetamol blocks the release of certain chemical messengers in the brain that are responsible for pain and fever. Phenylephrine is a decongestant which narrows the small blood vessels and provides relief from congestion or stuffiness in the nose.
Yes, Decolgen P Syrup is safe in most patients. However, in some patients it may cause common side effects like nausea, vomiting, allergic reaction, sleepiness, headache and other uncommon or rare side effects. Inform the doctor if you experience any persistent problem while taking this medicine.
Decolgen P Syrup is usually used for short term and can be discontinued when your symptoms are relieved. However, continue taking this medicine if your doctor has advised you to do so.
Yes, the use of Decolgen P Syrup can cause dizziness (feeling faint, weak, unsteady or lightheaded) in some patients. If you feel dizzy or lightheaded, it is better to rest for some time and resume once you feel better.
Decolgen P Syrup is usually safe when taken according to the recommended dose. However, an overdose of Decolgen P Syrup can damage your liver. Avoid drinking alcohol, while taking this medicine as it may increase your risk of liver damage.

Fact Box

Habit Forming

No

Therapeutic Class

RESPIRATORY
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Disclaimer

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.

Marketer details

Name: Medley Pharmaceuticals
Address: Plot No. D2 Medley House,Street No. 6 M.I.D.C. Area, Andheri (East), Mumbai-400 093, INDIA

Vendor Details

Country of origin: India
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