Cetirizine 10 mg + Phenylephrine 10 mg + Paracetamol 500 mg

Category- Allopathy

Medicine Highlights

Cetirizine + Phenylephrine + Paracetamol Uses

Cetirizine + Phenylephrine + Paracetamol is a multi-symptom cold and allergy relief combination. This combination is useful for the following conditions: 

1. Runny or stuffy nose 
2. Headache and body pain 
3. Fever 
4. Sinus pressure and nasal congestion       

Directions for use

1. Take this medicine exactly as prescribed by your doctor, at the same time each day. 
2. Do not stop taking this medicine without your doctor’s approval, even if you feel better. 
3. If you forget to take this medicine, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose.  

Cetirizine + Phenylephrine + Paracetamol side effects 

More Common  

1. Sleepiness or dizziness 
2. Dry mouth or throat 
3. Headache 
4. Nausea or stomach pain     

Less Common

1. Fast heartbeat 
2. Nervousness or trouble sleeping 
3. Skin rash or allergy 
4. Liver problems  

How Cetirizine + Phenylephrine + Paracetamol works 

This medicine works in three ways: Cetirizine stops the effects of histamine to reduce sneezing, runny nose, and itching. Phenylephrine shrinks the blood vessels in the nose to open blocked airways and make breathing easier. Paracetamol lowers fever and relieves pain or headache. Together, they help you feel better from cold, fever, and allergy symptoms. 

Safety Measures and Warning 

Allergy/Hypersensitivity

People allergic to cetirizine, phenylephrine, paracetamol or any ingredients in the medicine should avoid taking it, as it can cause serious allergic reactions like swelling, rash, itching, or difficulty breathing. 

Antidepressants

Phenylephrine can interact with antidepressants, potentially causing serotonin syndrome, which may lead to confusion, shaking, sweating, a fast heartbeat, or life-threatening symptoms. 

High Blood Pressure

People with high blood pressure should be cautious, as phenylephrine might worsen these conditions. 

Kidney or Liver Problems

People with serious kidney or liver diseases should use this combination only under close medical supervision, due to higher risk of side effects. 

Pregnancy or Breastfeeding

Pregnant or breastfeeding women should consult their doctor before use, to ensure safety for both mother and fetus. 

Cetirizine + Phenylephrine + Paracetamol Interaction with Food Product

Avoid taking caffeinated food, alcohol and smoking simultaneously as they can cause an increase or decrease in drug action; also, they may cause severe drowsiness and sedation as they act on the brain directly. 

Cetirizine + Phenylephrine + Paracetamol Interaction with Other Medicines

Avoid taking Cetirizine + Phenylephrine + Paracetamol with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal: 

Cetirizine + Phenylephrine + Paracetamol Chemical Structure

IUPAC (International Union of Pure and Applied Chemistry)/ Chemical name

Cetirizine: 2-[2-[4-[(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]acetic acid 

Phenylephrine: 3-[(1R)-1-hydroxy-2-(methylamino)ethyl]phenol 

Paracetamol: N-(4-hydroxyphenyl) acetamide 

Intake routine/cycle

Daily dose

Take Cetirizine + Phenylephrine + Paracetamol exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor. 

Missed Dose

If you forget to take your medicine, take the medication as soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage. 

Overdose

It is not recommended to take Cetirizine more than 10 mg, Phenylephrine more than 10 mg, and Paracetamol 4000 mg (4 g) per day, as overdose may cause drowsiness, dry mouth, nausea, vomiting, stomach pain, restlessness, high blood pressure, liver damage, or severe allergic reactions; seek medical help immediately if this happens. 

Storage

1. Store the medicine at room temperature 
2. Keep away from sunlight and moisture 
3. Keep out of reach of children 

Cetirizine + Phenylephrine + Paracetamol Summary

This combination medicine is commonly used to relieve symptoms of common cold, flu, sinus congestion, and allergies such as runny or blocked nose, sneezing, headache, fever, and body pain. It works by combining the actions of three drugs: Cetirizine, an antihistamine that blocks histamine to reduce sneezing and runny nose; Phenylephrine, a nasal decongestant that shrinks blood vessels in the nose to clear congestion; and Paracetamol, an analgesic and antipyretic that lowers fever and relieves pain. Taken together, they provide fast and effective relief from multiple cold and allergy symptoms. Avoid alcohol and do not exceed the recommended dose, as it may cause drowsiness or liver problems. 

FAQ’s

Can Cetirizine and Paracetamol be taken together? 

Yes, they can be taken together. Cetirizine helps with allergies, and Paracetamol reduces fever and pain. But please don’t take more than the recommended dose. 

What are the side effects of Cetirizine? 

Common side effects include sleepiness, dry mouth, dizziness, and headache. Rarely, it may cause stomach upset or allergic skin reactions. These effects are usually mild and go away on their own. 

Is Cetirizine safe during pregnancy? 

Cetirizine is generally considered safe in pregnancy when used at the recommended dose. However, it should be taken only if advised by a doctor, especially during the first trimester, to ensure safety for both mother and fetus. 

What are the side effects of Paracetamol?

Paracetamol is usually safe when taken in the correct dose. Rare side effects may include nausea, stomach pain, rash, or allergic reaction. Taking too much can cause serious liver damage, so always follow the recommended dose.  

What are the uses of Paracetamol? 

Paracetamol is used to reduce fever and relieve mild to moderate pain such as headache, toothache, body pain, muscle pain, back pain, and pain due to cold or flu. 

What are the uses of Phenylephrine? 

Phenylephrine is used to relieve nasal congestion caused by common cold, allergies, or sinusitis. It helps clear blocked nose and makes breathing easier. 

What is the class of Phenylephrine? 

Phenylephrine belongs to the nasal decongestant and sympathomimetic class of drugs. It works by narrowing blood vessels in the nose to reduce swelling and congestion. 

Reference 

1. PubChem. Cetirizine [Internet]. pubchem.ncbi.nlm.nih.gov. Available from 
2. PubChem. Phenylephrine [Internet]. pubchem.ncbi.nlm.nih.gov. Available from 
3. PubChem. Acetaminophen [Internet]. Pubchem. PubChem; 2020. Available from 
4. Thornton P. Cetirizine Hcl: Uses, Dosage & Side Effects [Internet]. Drugs.com. 2021. Available from 
5. Richards E, Maani CV. Phenylephrine [Internet]. Nih.gov. StatPearls Publishing; 2023. Available from 
6. Durbin K. Acetaminophen [Internet]. Drugs.com. Drugs.com; 2023. Available from 

Pranathi Chintaluri

Pranathi is a final year Pharm D student at Chalapathi Institute of Pharmaceutical Sciences. She loves learning and applying her knowledge in pharmacy and has a passion for writing, which allows her to express ideas clearly and creatively. She enjoys combining her technical skills with her love for writing and communication to make a meaningful impact. Currently she is working on a research paper about “Consanguineous marriages and its impact on children’s health” which will be published by the end of 2025.