cet p syrup - Cetirizine (NA) medicine

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🏭 Crest Pharma Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 20, 2026
⚠️ Hepatotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for allergic rhinitis and chronic urticaria.
Reviewed by
SaathiMed Expert Panel | Sep 20, 2026

When to Call Your Doctor IMMEDIATELY

  • Difficulty breathing or swelling of the face, lips, tongue, or throat.
  • Severe dizziness or fainting.
  • Fast, irregular, or pounding heartbeat.
  • Yellowing of the skin or eyes (jaundice).
  • Severe abdominal pain or dark urine.
  • Unusual bleeding or bruising.
  • Persistent headache or confusion.

If experiencing severe symptoms, call emergency services immediately.

What is cet p syrup used for?

This medicine contains cetirizine, an antihistamine used to treat allergy symptoms such as sneezing, runny nose, and itching. It works by blocking histamine and is taken once daily.

  • Generic Name: Cetirizine
  • Manufacturer: Crest Pharma Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 cet p syrup के बारे में (Hindi Summary)

उपयोग: यह दवा एलर्जी के लक्षणों जैसे छींक आना, नाक बहना, आंखों में खुजली और त्वचा पर खुजली को कम करने के लिए उपयोग की जाती है। यह एलर्जिक राइनाइटिस, पित्ती और एलर्जिक कंजंक्टिवाइटिस के इलाज में प्रभावी है। यह शरीर में हिस्टामिन नामक पदार्थ को रोककर काम करती है।

साइड इफेक्ट्स: आम दुष्प्रभावों में हल्की नींद आना, मुंह सूखना, थकान और सिरदर्द शामिल हैं। ये आमतौर पर हल्के और अस्थायी होते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन यदि आपको सांस लेने में कठिनाई, चेहरे या गले में सूजन, या पीलिया जैसे लक्षण दिखें तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। इसकी मात्रा न बढ़ाएं। जब तक आपको पता न चले कि यह दवा आप पर कैसा असर करती है, तब तक वाहन चलाने या मशीनरी चलाने से बचें। शराब का सेवन न करें क्योंकि इससे नींद और बढ़ सकती है। यदि आप गर्भवती हैं, स्तनपान करा रही हैं, या आपको किडनी या लीवर की बीमारी है, तो डॉक्टर को बताएं।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

💊 cet p syrup Uses & Benefits

[{"condition":"Allergic rhinitis","description":"Relieves sneezing, runny nose, itchy nose, and watery eyes caused by seasonal or perennial allergies.","evidence":"Well-established"},{"condition":"Chronic urticaria","description":"Reduces itching and hives associated with chronic idiopathic urticaria.","evidence":"Well-established"},{"condition":"Allergic conjunctivitis","description":"Helps relieve itchy, red, and watery eyes due to allergies.","evidence":"Well-established"},{"condition":"Pruritus","description":"Provides relief from itching associated with various allergic skin conditions.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Mild allergic asthma","description":"Sometimes used as an adjunct to control allergic triggers in mild asthma.","evidence":"Limited"},{"condition":"Anxiety-related itching","description":"Occasionally used off-label for itching without a clear allergic cause.","evidence":"Limited"}]

Primary treatment for: Allergic rhinitis

Also treats: Chronic urticaria, Allergic conjunctivitis, Pruritus

📋 Drug Information

Generic Name(s)Cetirizine
Brand NameAlerid Syrup
ManufacturerCrest Pharma Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassRESPIRATORY
Action ClassH1 Antihistaminics (second Generation)
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Protect from moisture and heat.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine at the same time each day to maintain consistent blood levels.
2
Avoid driving or operating heavy machinery until you know how this medicine affects you.
3
Do not drink alcohol while taking this medicine as it can increase drowsiness.
4
If you have kidney disease, your doctor may prescribe a lower dose.
5
Consult your doctor if your allergy symptoms do not improve within a few days.
6
Inform your doctor about all other medications you are taking, especially sedatives and antidepressants.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Sneezing and runny nose
This medicine is commonly used for allergic rhinitis.
Likely Use
Itchy hives
This medicine is effective for chronic urticaria.
Likely Use
Fever
This medicine is not a fever reducer.
Not Primary
Cough with phlegm
This medicine is not for cough due to infection.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionCetirizine is rapidly absorbed after oral administration. Food does not significantly affect the extent of absorption, but it may delay the time to peak concentration.
DistributionCetirizine distributes widely throughout the body. It has a low volume of distribution and does not extensively penetrate the brain.
Protein BindingCetirizine is approximately 93% bound to plasma proteins.
MetabolismCetirizine undergoes minimal hepatic metabolism. It is primarily excreted unchanged in the urine.
Half-LifeThe elimination half-life of cetirizine is approximately 8 to 10 hours in adults with normal kidney function.
ExcretionCetirizine is primarily excreted unchanged in the urine. About 60% of an oral dose is recovered in urine within 24 hours.
BioavailabilityThe oral bioavailability of cetirizine is approximately 70% or higher.
Onset of ActionAllergic symptom relief typically begins within 1 hour after oral administration.
Peak Plasma TimePeak plasma concentrations are reached about 1 hour after oral administration.
Duration of ActionThe effects of cetirizine last for approximately 24 hours, allowing once-daily dosing.

How It Works

Cetirizine is a selective histamine H1-receptor antagonist. It works by blocking histamine, a substance in the body that causes allergic symptoms. By binding to H1 receptors, it prevents histamine from triggering sneezing, itching, and fluid leakage from blood vessels. This medicine also inhibits the migration of eosinophils, which are involved in allergic inflammation. Unlike first-generation antihistamines, cetirizine has limited ability to cross the blood-brain barrier, so it causes less sedation.

Mechanism Steps

1
Histamine release: During an allergic reaction, mast cells release histamine.
2
H1 receptor binding: Cetirizine binds to H1 receptors on target cells, blocking histamine's action.
3
Reduced allergic response: This leads to decreased sneezing, itching, and nasal congestion.
4
Eosinophil inhibition: Cetirizine also reduces eosinophil migration, lessening allergic inflammation.

💡 How to Take cet p syrup

Strength: Cetirizine immediate-release tablet, strength not specified.

1Take this medicine by mouth with or without food.
2Swallow the tablet whole with a glass of water.
3Do not crush, chew, or break the tablet unless your doctor advises.
4Take it at the same time each day to maintain consistent levels.
5If you miss a dose, follow the missed dose instructions.

Dosage Information

Adult DosageThe usual adult dose of this medicine is 5 mg to 10 mg once daily, depending on the severity of symptoms and kidney function. For allergic rhinitis, 10 mg once daily is common. For chronic urticaria, 5 mg to 10 mg once daily may be used. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may require a lower dose, especially if kidney function is reduced. Dose must be individualized by a qualified clinician.
Renal ImpairmentIn patients with mild to moderate renal impairment, a lower dose of 5 mg once daily is recommended. In severe renal impairment, cetirizine is not recommended. Dose must be individualized by a qualified clinician.
Hepatic ImpairmentNo specific dose adjustment is recommended for patients with liver impairment alone. However, if both liver and kidney impairment are present, dose reduction may be needed. Dose must be individualized by a qualified clinician.
Maximum Daily Dose10 mg per day for adults.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With or without food
Can be taken with or without food
Food does not significantly affect absorption.
Grapefruit juice
Avoid large amounts
May increase cetirizine levels.

⏰ What to Do If You Miss a Dose

📌 Less than 12 hours have passed since the missed dose.
→ Take the missed dose as soon as you remember.
💡 Continue with your regular schedule.
📌 More than 12 hours have passed since the missed dose.
→ Skip the missed dose.
💡 Do not double the dose to catch up.

⚠️ Side Effects of cet p syrup

✅ Common Side Effects

Drowsiness (Common (5-10%))
Avoid driving or operating machinery until you know how it affects you. Consult your doctor if it persists.
Dry mouth (Common (5-10%))
Sip water frequently. Chew sugar-free gum. Consult doctor if severe.
Fatigue (Common (5-10%))
Get adequate rest. If fatigue is persistent, consult your doctor.
Headache (Common (5-10%))
Usually resolves on its own. Consult doctor if severe or persistent.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience rash, itching, swelling of face, lips, tongue, or throat, or difficulty breathing.
Liver problems (Rare (<0.1%))
Report yellowing of skin or eyes, dark urine, or severe abdominal pain to your doctor immediately.
Fast or irregular heartbeat (Rare (<0.1%))
Seek medical attention if you notice palpitations or chest discomfort.

⚠️ Rare Side Effects

Agitation
Consult your doctor if this occurs.
Confusion
Report to your doctor immediately.
Insomnia
Discuss with your doctor if it affects your sleep.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Alcohol Major
Diazepam Moderate
Theophylline Moderate
Ritonavir Moderate

🚨 Major Interactions

  • CNS depressants (e.g., alcohol, sedatives, opioids)

⚡ Moderate Interactions

  • Theophylline
  • Ritonavir

🍷 Alcohol Interaction

Alcohol can increase the drowsiness caused by this medicine. It is best to avoid alcohol while taking this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity to cetirizine or any component of the formulation","Severe renal impairment (creatinine clearance

⚠️ Warnings & Precautions

["May cause drowsiness; avoid driving or operating machinery until you know how it affects you.","Avoid alcohol and other CNS depressants.","Use with caution in patients with kidney or liver disease.","Not recommended for children under 2 years of age.","Elderly patients may be more sensitive to side effects."]

🤱 Lactation Safety

Cetirizine passes into breast milk in small amounts. It is generally considered safe during breastfeeding, but consult your doctor to weigh benefits and risks.

💊 Overdose Management

Overdose may cause drowsiness, agitation, or restlessness. In case of overdose, seek immediate medical attention. Treatment is supportive and symptomatic. There is no specific antidote.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not exceed the recommended dose. Avoid driving or operating heavy machinery until you know how this medicine affects you, as it may cause drowsiness. Avoid alcohol while taking this medicine because it can increase drowsiness. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Tell your doctor about all other medicines you are taking, especially sedatives, pain relievers, and antidepressants. If you have kidney or liver disease, your doctor may adjust your dose. Keep this medicine out of reach of children. Store it at room temperature away from moisture and heat.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the side effects of this medicine, especially drowsiness. Dose adjustment may be needed based on kidney function.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before taking this medicine. Cetirizine is generally considered safe, but your doctor will weigh the benefits and risks.

🏥 Post-Surgery Considerations

This medicine may cause drowsiness, which could affect recovery after surgery. Inform your surgeon and anesthesiologist that you are taking this medicine.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine. It may cause dry mouth, which can affect dental health. Maintain good oral hygiene.

💚 Lifestyle Tips for Better Results

🏃
Identify and avoid allergens that trigger your symptoms.
🥗
Keep windows closed during high pollen seasons.
😴
Use air purifiers to reduce indoor allergens.
💧
Wash bedding regularly in hot water to reduce dust mites.
🧘
Maintain a healthy diet and stay hydrated.

🏋️ Exercise Considerations

This medicine may cause drowsiness. Avoid strenuous exercise or activities requiring alertness until you know how it affects you.

🥗 Diet Recommendations

Stay well hydrated.
Include fruits and vegetables rich in antioxidants.
Avoid known food allergens.

💼 Impact on Daily Work & Life

This medicine may cause mild drowsiness, which can affect your ability to drive or operate machinery. It is advisable to avoid such activities until you know how it affects you. Otherwise, it has minimal impact on daily activities.

🛑 When to Stop This Medicine

Do not stop taking this medicine without consulting your doctor. If you experience severe side effects, seek medical advice immediately.

📅 Long-Term Use Effects

Long-term use of this medicine is generally safe. However, regular monitoring of kidney function may be needed in patients with kidney disease. If you have been taking it for a long time, do not stop without consulting your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Allergen avoidance

Avoiding allergens can reduce the need for medication.

Evidence: Well-established
Nasal saline irrigation

Can help relieve nasal congestion.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

This medicine does not interact with vaccines. You can receive vaccinations while taking this medicine.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C).

❌ DON'T

Do not refrigerate unless specified.

✅ DO

Keep in the original container.

❌ DON'T

Do not transfer to unmarked containers.

✅ DO

Keep away from direct sunlight and moisture.

❌ DON'T

Do not store in the bathroom.

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging with a copy of your prescription. Store it at room temperature and protect it from extreme heat or moisture. If crossing time zones, adjust the timing of your dose gradually to match your new schedule. Check local customs regulations regarding carrying prescription medications.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with seasonal allergic rhinitis.
She started taking this medicine as prescribed by her doctor. Within an hour of the first dose, her sneezing and runny nose significantly reduced. She experienced mild drowsiness initially, but it subsided after a few days. She advises taking it at bedtime to minimize daytime drowsiness.
💡 Lesson: Taking this medicine at bedtime can help manage drowsiness during the day.
👤 A 50-year-old man with chronic urticaria.
He had been suffering from itchy hives for months. His doctor prescribed this medicine once daily. His itching decreased remarkably within two days, and the hives gradually disappeared over a week. He emphasizes the importance of not missing doses.
💡 Lesson: Consistent daily use is key to controlling chronic urticaria symptoms.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine usually starts working within 1 hour after taking a dose.

Q: Can I take it at night?

A: Yes, it can be taken at night. Some people prefer taking it at bedtime to minimize daytime drowsiness.

Q: Is it safe during pregnancy?

A: Cetirizine is generally considered safe during pregnancy, but consult your doctor before use.

Q: What are the common side effects?

A: Common side effects include mild drowsiness, dry mouth, fatigue, and headache.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for cet p syrup

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine is a steroid.
    Fact: This medicine is an antihistamine, not a steroid.
  • Myth: It can be used for common cold.
    Fact: It is only effective for allergic symptoms, not for viral colds.
  • Myth: It causes immediate weight gain.
    Fact: Weight gain is not a common side effect of cetirizine.

🔄 Alternative Options

Generic Alternatives

  • Cetirizine 5 mg tablet
  • Cetirizine 10 mg tablet

Brand Alternatives

  • Zyrtec
  • Alerid
  • Cetzine
  • Reactine

📊 Comparison with Similar Medicines

[{"medicine":"Cetirizine","class":"Second-generation antihistamine","sedation":"Low","duration":"24 hours"},{"medicine":"Levocetirizine","class":"Second-generation antihistamine","sedation":"Low","duration":"24 hours"},{"medicine":"Loratadine","class":"Second-generation antihistamine","sedation":"Very low","duration":"24 hours"}]

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