Synfast Syrup

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 02 Feb 2026 | 08:50 AM (IST)

Synfast Syrup is a combination medicine used to treat common cold symptoms. It thins mucus in the nose, windpipe and lungs making it easier to cough out. It also provides relief from seasonal allergic conditions such as runny nose, watery eyes, sneezing and congestion or stuffiness.

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General Information

Contains

Paracetamol (125mg/5ml)+ Phenylpropanolamine (12.5mg/5ml)+ Chlorpheniramine Maleate (1mg/5ml)+ Sodium Citrate (60mg/5ml)

Marketer

Sansill Formulations

Storage

Store below 30°C

The content is shown in English

Product introduction

Synfast Syrup is taken with or without food in a dose and duration as advised by the doctor. The dose you are given will depend on your condition and how you respond to the medicine. You should keep taking this medicine for as long as your doctor recommends. If you stop treatment too early your symptoms may come back and your condition may worsen. Let your doctor know about all other medications you are taking as some may affect, or be affected by this medicine.

The most common side effects are nausea, palpitations, insomnia, and high blood pressure. Most of these are temporary and usually resolve with time. Contact your doctor straight away if you are at all concerned about any of these side effects. It can also cause dizziness and sleepiness, so do not drive or do anything that requires mental focus until you know how this medicine affects you. Avoid drinking alcohol while taking this medicine as it can make dizziness worse.

Before taking it, you should tell your doctor if you have any kidney or liver diseases so that your doctor can prescribe a suitable dose for you. Also tell your doctor if you are pregnant, planning pregnancy or breastfeeding.

Uses of Synfast Syrup

Common cold

Benefits of Synfast Syrup

Common cold
Synfast Syrup is a combination medicine that effectively relieves symptoms of the common cold, such as a blocked nose, runny nose, watery eyes, sneezing, and congestion or stuffiness. It helps loosen thick mucus, making it easier to cough out. It also shrinks the blood vessels and provides rapid relief that lasts for several hours. These actions make breathing easier.

Synfast Syrup is safe and effective. It usually starts to work within a few minutes, and the effects can last up to several hours. Take it as prescribed by your doctor, and do not stop using it unless you are advised otherwise.

Side effects of Synfast 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 Synfast

Nausea
Sleepiness
Palpitations
Insomnia (difficulty in sleeping)
High blood pressure

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

How Synfast Syrup works

Synfast Syrup is a combination of four medicines: Paracetamol, Phenylpropanolamine, Chlorpheniramine Maleate and Sodium Citrate which relieve common cold symptoms. Paracetamol is an analgesic (pain reliever) and antipyretic (fever reducer). It blocks the release of certain chemical messengers in the brain that cause pain and fever. Phenylpropanolamine is a sympathomimetics agonist. It narrows blood vessels in the nose to relieve congestion. Chlorpheniramine Maleate is an antiallergic which relieves allergy symptoms like runny nose, watery eyes and sneezing. Sodium Citrate is a mucolytic which thins and loosens mucus (phlegm), making it easier to cough out.

Quick tips

Synfast Syrup is prescribed to get relief from symptoms of common cold.
Take exactly as directed by your doctor or on the label. Do not increase the dosage or take for longer than is recommended.
Call your doctor if your symptoms have not improved within seven days of treatment.
Inform your doctor if you are taking any other medications for cold.
Along with taking Synfast Syrup do the following simple tips at home to get relief:
1. Steam inhalation.
2. Gargling with warm saltwater.
3. Apply vapor rubs on chest, back if needed. Take enough rest.
4. Take warm food and fluid only. Ensure adequate fluid intake.
5. Advise hygiene measures to reduce spread: frequent hand-washing, avoiding sharing towels, pillowcases, etc.

Safety advice

Alcohol

UNSAFE

It is unsafe to consume alcohol with Synfast Syrup

Pregnancy

UNSAFE

Synfast Syrup is highly unsafe during pregnancy. It can cause serious harm to the unborn baby, including birth defects and pregnancy loss. Do not use this medicine if you are pregnant or planning to become pregnant.

Breast feeding

CONSULT YOUR DOCTOR

Information regarding the use of Synfast Syrup during breastfeeding is not available. Please consult your doctor.

Driving

UNSAFE

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

Kidney

UNSAFE

Synfast Syrup is unsafe to use in patients with kidney disease and should be avoided.

Liver

CAUTION

Synfast Syrup should be used with caution in patients with liver disease. Dose adjustment may be needed.
However, the use of Synfast Syrup is not recommended in patients with severe liver disease and active liver disease.

Frequently asked questions

What is Synfast Syrup used for?

Synfast Syrup is used to treat the symptoms of the common cold and flu. It provides relief from a range of symptoms, including fever, headache, body aches, stuffy nose, runny nose, sneezing, and watery eyes.

Will Synfast Syrup make me drowsy?

Yes. One of the main ingredients in Synfast Syrup, chlorpheniramine maleate, can cause significant drowsiness and sleepiness. Because of this, it is often best to take this medicine when you are able to rest, and you should avoid activities that require full mental alertness, such as driving or operating heavy machinery.

How quickly can I expect to feel better after taking Synfast Syrup?

You should start to feel relief from symptoms such as fever, pain, and nasal congestion within about 30 to 60 minutes of taking Synfast Syrup. The full effects will be felt within a couple of hours as the medicine is absorbed into your bloodstream.

Can I take Synfast Syrup for my seasonal allergies, even if I do not have a cold?

The antihistamine (chlorpheniramine) and decongestant (phenylpropanolamine) in Synfast Syrup make it effective for treating allergic rhinitis (hay fever). It can help relieve sneezing, a runny nose, and nasal congestion associated with seasonal allergies.

What should I tell my doctor before I start taking Synfast Syrup?

Before starting Synfast Syrup, you should inform your doctor if you have a history of high blood pressure, heart disease, thyroid problems, glaucoma, or an enlarged prostate. The phenylpropanolamine in this medicine can make these conditions worse, so your doctor will need to determine if it is safe for you.

How long can I take Synfast Syrup for?

Synfast Syrup is intended for short-term relief of symptoms. You should not take it for more than 5 to 7 days. If your symptoms persist or get worse, you should stop taking the medicine and consult your doctor.

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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.

Marketer details

Name: Sansill Formulations
Address: no.17-1-473, plot no.34, d, 67/1, sri krishna nagar, saidabad, hyderabad, telangana 500059

Vendor Details

Country of origin: India

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Synfast Syrup

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Synfast Syrup

Benefits of Synfast Syrup

Side effects of Synfast Syrup

How to use Synfast Syrup

How Synfast Syrup works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Frequently asked questions

What is Synfast Syrup used for?

Will Synfast Syrup make me drowsy?

How quickly can I expect to feel better after taking Synfast Syrup?

Can I take Synfast Syrup for my seasonal allergies, even if I do not have a cold?

What should I tell my doctor before I start taking Synfast Syrup?

How long can I take Synfast Syrup for?

Fact Box

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Therapeutic Class

References

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Disclaimer

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