Cetirizine Dihydrochloride
Cettec (Cetirizine Dihydrochloride 10mg) Non-Drowsy Antihistamine
Cettec — Cetirizine 10mg non-drowsy antihistamine tablet, 24-hour allergy relief
💊 Active: Cetirizine Dihydrochloride 10mg
⏱️ Dose: 1 tablet once daily; onset within 1 hour
🍽️ Food: With or without food
📦 Pack: 10 tablets (1 blister) or 100 tablets (1 box)
⚡ Benefit: Non-drowsy; relieves nasal congestion, hives, itching
🌡️ Storage: Below 30°C, away from sunlight
Shipping
Discreet shipping within Thailand — packaging does not identify the product. Customers can review shipping and return conditions per our store policy. Contact our team for any questions.
Product Description
Cettec (Cetirizine Dihydrochloride 10 mg) is a second-generation antihistamine that selectively blocks H1-histamine receptors, preventing allergic reactions. Because it crosses the blood-brain barrier to a lesser extent than first-generation antihistamines like Chlorpheniramine, it causes significantly less drowsiness — making it a practical non-drowsy option for daily allergy management.
- 📊 Onset within 20–60 minutes and about 24 hours of coverage — one tablet once daily
- 📊 Allergic rhinitis affects roughly 10–30% of the population, with rising prevalence in urban areas
- 📊 Studies show Cetirizine 10 mg significantly reduces sneezing, nasal congestion, runny nose, and itchy eyes versus placebo
- 📊 Cetirizine's somnolence rate is about 11–14%, markedly lower than older Chlorpheniramine-type antihistamines
- 📊 Cetirizine is on the WHO Essential Medicines List as an essential standard antihistamine
🏭 Manufacturer: Cettec | Order online at Intimo Life — nationwide delivery in discreet packaging
⚠️ If you have underlying health conditions, are pregnant, or breastfeeding, consult a doctor or pharmacist before taking Cettec.
About Cettec
What is Cettec?
Cettec is an antihistamine tablet containing Cetirizine Dihydrochloride 10 mg as its active ingredient. It belongs to the second generation of antihistamines.
Mechanism of action: Cettec works by selectively blocking H1-histamine receptors, preventing histamine from binding and triggering allergic reactions. Cetirizine is included on the WHO Essential Medicines List and is widely used globally.
Compared to first-generation antihistamines such as Chlorpheniramine, Cettec crosses the blood-brain barrier to a lesser extent, resulting in significantly less drowsiness — making it suitable for daily use.
What conditions does Cettec treat?
Cettec (Cetirizine 10mg) is used to relieve allergy symptoms caused by the immune system's response to various allergens.
- 🤧 Nasal congestion, sneezing, runny nose from allergic rhinitis
- 👁️ Red, itchy eyes and watery eyes from dust, pollen, or pet dander allergies
- 🌿 Seasonal allergies — dust mites, animal fur, pollen
- 🔴 Urticaria (hives) — raised, red, itchy welts on the skin
- 🟠 Allergic skin reactions and itching
- 😤 Chronic allergies and hay fever
Cettec is ideal for those who need a non-drowsy antihistamine that can be used throughout the day without affecting work or driving.
How to take Cettec — dosage guide
Here is a clear guide on how to take Cettec (Cetirizine 10 mg) and when to take it:
- Adults and children 12 years and over: 1 tablet (Cetirizine 10 mg) once daily
- When to take: With or without food; take at the same time each day for best results
- Time of day: Morning or evening — if mild drowsiness occurs, switch to taking it at night
- Maximum dose: 10 mg per day (1 tablet) for adults
- Elderly or those with kidney problems: Dose adjustment may be needed; consult a doctor
Cettec begins working within 1 hour and provides up to 24 hours of allergy relief, so only one dose per day is required.
Side effects of Cettec
Cettec (Cetirizine) may cause side effects in some people, though these are generally mild and infrequent.
- Common (1-10%): Mild drowsiness, dry mouth, headache, nausea, fatigue
- Uncommon (0.1-1%): Palpitations, skin rash, dizziness
- Rare (<0.1%): Difficulty urinating, vision problems
Stop taking Cettec and seek medical attention immediately if you experience severe allergic reactions such as hives, difficulty breathing, or facial swelling — these are very rare but require urgent care.
Compared to first-generation antihistamines, Cettec causes significantly less drowsiness as it crosses the blood-brain barrier to a lesser degree.
Contraindications and Precautions
Before using Cettec, be aware of the following contraindications and precautions:
- ❌ Do not use if allergic to Cetirizine, Hydroxyzine, or any component of this medication
- ❌ Not recommended for children under 6 years (tablet form)
- ⚠️ Kidney or liver problems: Consult a doctor before use; dose adjustment may be required
- ⚠️ Pregnancy and breastfeeding: Consult a doctor before taking Cettec
- ⚠️ Elderly: May be more sensitive to the medication; consider starting with a lower dose
- ⚠️ Driving: Although Cettec is a non-drowsy antihistamine, some individuals may still experience mild drowsiness; exercise caution
- ⚠️ Avoid alcohol: Combining Cettec with alcohol may increase central nervous system depression
Cettec vs other antihistamine tablets
Intimo Life stocks several antihistamine tablets. Here is a quick comparison:
- Cettec (Cetirizine 10mg) — Non-drowsy antihistamine at the most affordable price, suitable for general use
- Alerest (Cetirizine) — Same active ingredient as Cettec; slightly different pricing
- Levocet (Levocetirizine) — An improved version of cetirizine; less drowsiness and faster onset; better suited for sensitive individuals
- Telfast (Fexofenadine) — Completely non-drowsy; ideal for those who drive or need full concentration at work
Quick summary: Cettec and Alerest (cetirizine) offer the best value — Levocet (levocetirizine) is less sedating for those needing higher performance — Telfast (fexofenadine) causes zero drowsiness, perfect for drivers and working professionals.
Can Cettec be taken with other medications?
Cettec (Cetirizine) may interact with certain medications — here are the key ones to be aware of:
- Alcohol: Increases central nervous system depression; avoid combining
- Sleeping pills / sedatives: May have an additive sedative effect
- Other antihistamines: Avoid concurrent use to prevent compounded side effects
- Theophylline: May reduce the clearance of Cetirizine from the body
- Common medications (e.g. paracetamol, antibiotics): Generally safe to use with Cettec; consult a pharmacist to confirm
If you are currently taking any other medications, inform your pharmacist before purchasing Cettec.
How quickly does Cettec work?
Cettec (Cetirizine 10mg) provides fast-acting allergy relief:
- ⏱️ Onset of action: Within 20-60 minutes of taking the tablet
- ⏱️ Peak effect: Approximately 1-2 hours after ingestion
- ⏱️ Duration: Up to 24 hours — only one dose per day required
Because Cettec provides 24-hour coverage, it is well-suited for all-day allergy prevention without the need for repeated doses.
Where to buy Cettec?
Where to buy Cettec?
Order Cettec (Cetirizine 10mg) online at Intimo Life. We deliver nationwide across Thailand within 1-3 business days in discreet packaging — product name not printed on the parcel.
⚠️ ข้อจำกัดความรับผิดชอบ
เนื้อหาในบทความนี้มีจุดประสงค์เพื่อให้ความรู้ทั่วไปเท่านั้น ไม่ได้มีเจตนาทดแทนคำแนะนำ การวินิจฉัย หรือการรักษาจากแพทย์หรือเภสัชกรผู้เชี่ยวชาญ หากมีข้อสงสัยเกี่ยวกับอาการหรือการใช้ยา ควรปรึกษาแพทย์หรือเภสัชกรก่อนเสมอ
References
- NHS UK. Cetirizine: antihistamine that relieves allergy symptoms. NHS. 2024.
- Bhatt SP, et al. Cetirizine. StatPearls [Internet]. NCBI. 2024.
- MedlinePlus. Cetirizine. National Library of Medicine. 2024.
- PubChem (NIH) — Cetirizine
- PubChem. Cetirizine — Compound Summary. National Center for Biotechnology Information. 2024.
Frequently Asked Questions
Cettec is suitable for adults and children aged 12 and over at the standard dose of 1 tablet (10 mg) once daily. For children under 12, a pediatric cetirizine formulation such as a syrup dosed by body weight is recommended. Always consult a pharmacist or pediatrician before giving any antihistamine to a young child.
Cettec (Cetirizine) is not habit-forming and does not cause physical dependence. It can be taken continuously for chronic allergy conditions such as dust mite allergy or chronic urticaria. As a general guide, use it only when symptoms are present. If continuous use beyond 4 weeks is needed, consult a doctor or pharmacist to assess the underlying cause of your allergy.
If you miss a dose of Cettec and remember within 12 hours of your usual time, take it as soon as you remember. If it is less than 12 hours until your next scheduled dose, skip the missed dose and continue your regular schedule. Do not double up — the maximum dose is 1 tablet (10 mg) per day.
Cettec is a non-drowsy antihistamine because Cetirizine crosses the blood-brain barrier less than first-generation antihistamines. However, some people may still experience mild drowsiness, especially when first starting treatment — this usually diminishes with continued use.
Cettec can generally be taken alongside Paracetamol without significant interaction. However, be cautious with combination cold medicines that already contain an antihistamine (such as those with Chlorpheniramine), as combining two antihistamines may increase drowsiness. If unsure about the ingredients in any medicine you are taking, always ask a pharmacist first.
Mild dry mouth or dry throat is an occasional side effect of antihistamines, including Cetirizine, though it occurs far less frequently than with first-generation antihistamines. Drinking extra water throughout the day can help. Other mild side effects that may occur include slight headache or fatigue, which typically ease as your body adjusts to the medication. If side effects are bothersome or persistent, stop taking the medicine and consult a pharmacist.
Pregnant women should always consult a doctor or pharmacist before taking Cettec. Although Cetirizine is classified as FDA Category B, any medication use during pregnancy should be under medical supervision.
Cettec is not different from Cetirizine — Cettec is the brand name of a tablet containing Cetirizine Dihydrochloride 10 mg as the active ingredient, just as Zyrtec and Alerest also contain Cetirizine as their active substance.
Cettec is a non-drowsy antihistamine, but some individuals may still feel mildly drowsy, especially the first time they take it. It is advisable to observe how you feel before driving or operating machinery.
The active ingredient and effectiveness are identical — the only difference is pack size. The 10-tablet blister (19 THB) is ideal for first-time users, while the 100-tablet box (169 THB) is more economical for ongoing allergy treatment, offering a lower per-tablet cost.
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