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Jefferson T
Cetirizine
Up to 24-hour allergy relief, less sneezing, a less runny nose, and more comfort throughout the day.
Cetirizine
10mg
30 pills
Suitable for 30 days
$49.99
30 pills
Suitable for 30 days
$49.99
60 pills
Suitable for 60 days
$64.99
90 pills
Suitable for 90 days
$79.99
$49.99
Incl. Rx and shipping
Why choose Cetrizine
- Fast-acting – Starts relieving allergy symptoms in about 1 hour.
- All-day relief – One tablet lasts up to 24 hours with no repeat dosing.
- Well-tolerated – Fewer side effects than older antihistamines.
- Proven in clinical trials – Shown to significantly reduce hay fever symptoms within days.
Good to know*
- Common side effects include mild drowsiness and dry mouth.
- Take at the same time each day for consistent relief.
- Avoid alcohol and driving if you feel drowsy from this medication.
Delivery & discretion
- Free shipping on all orders
- Delivery in 2-3 working days
- Need it quick: priority shipping option available in checkout
- Comes in plain packaging
Our service
- No insurance needed
- No in-person doctor visit needed with our quick online consultation
- No prescription needed
- Reviewed by US-licensed physicians
- Dispensed from US -licensed pharmacy
- FDA-approved medication
How to use
Cetirizine
Take 1 tablet daily
Take one 10 mg tablet once a day. It can be taken with or without food, at any time of day. .
Daily routine helps
Take it consistently at the same time each day, especially during allergy season or known exposure periods.
Relief in 1 hour
Most people start feeling better within 1 hour. Full symptom control typically builds with daily use.
Key facts
Cetirizine
-
Used for
Seasonal or year-round hay fever symptoms.
-
How to use it*
Take one 10 mg tablet once daily, with or without food.
-
How long to work
Relief usually begins within 1 hour and lasts 24 hours.
-
Common side effects*
Mild drowsiness, dry mouth, fatigue.
-
Who should not take it*
Avoid if you have liver or kidney issues.
-
Interactions*
Alcohol may worsen drowsiness.
-
Generic/branded.
Generic: Cetirizine
Brand: Zyrtec
* Always consult the patient leaflet for comprehensive information.
Cetirizine FAQs
What is Cetirizine and what is it used for?
Cetirizine is a second-generation antihistamine that helps relieve symptoms of hay fever and other allergies. It works by reducing the amount of histamine in the body, which causes sneezing, itchy or watery eyes, a runny or blocked nose, and other allergy symptoms.
Is Cetirizine the same as Zyrtec?
Yes. Cetirizine and Zyrtec contain the same active ingredient, cetirizine.
Cetirizine is a generic version, whilst Zyrtec is the branded version. Both work the same way to relieve hay fever and allergy symptoms.
How to use
Who can use Cetirizine?
Anyone with symptoms of hay fever or allergies can take cetirizine.
Do not take cetirizine if you:
- Have an allergy to cetirizine or any other ingredients
- Have severe renal failure
- Are breastfeeding
Use with caution if you:
- Have renal insufficiency
- Have problems passing urine
- Have epilepsy or are at risk of seizures
- Are pregnant or breastfeeding
For a complete list of precautions and medicine interactions, consult the patient information leaflet.
How long does it take to work?
Cetirizine usually starts to take effect within an hour, with the full effect often felt 1-3 hours after taking it.
Safety & side effects
What are the possible side effects?
Common side effects include:
- Drowsiness
- Diarrhoea, nausea or dry mouth
- Dizziness
- Headache
- Fatigue
Less common side effects include:
- Rash
- Abdominal pain
- Feeling generally unwell
- Sore throat or cough
Seek immediate medical attention if you experience symptoms of an allergic reaction such as:
- Swollen tongue or face
- Difficulty breathing
- Hives
What should I avoid while taking Cetirizine?
Cetirizine can cause drowsiness and fatigue so caution is advised when driving or operating machinery.
Buying Cetirizine
How do I buy Cetirizine online from SpeedyHealth?
You will need to complete a short consultation form. This allows our doctors to check that the medicine is safe and appropriate for you.
If suitable, your treatment will be prepared and dispatched directly to you.
Medically reviewed by Dr. Adrian Rawlinson
Written by our editorial team | Last reviewed January 15, 2026
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