Zyrtec

(Cetirizine)

Zyrtec (cetirizine HCl) is an antihistamine that relieves allergy symptoms such as watery eyes, runny nose, itching eyes/nose, and sneezing from hay fever (allergic rhinitis due to allergens) and other allergies, such as allergies to molds and dust mites. Zyrtec is also used to treat itching and swelling caused by chronic urticaria (hives). Zyrtec can typically be used by adults and pediatric patients over 6 years of age).

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Brand Versions

Zyrtec

Strength
5mg
Country
Canada
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Marketed as Reactine (36pk) in Canada

Zyrtec

Strength
10mg
Country
India
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Marketed as Zyrtec) in India

Also available from Canada and Canada
Strength
10mg
Country
Canada
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Marketed as Reactine (48pk) in Canada

Strength
10mg
Country
Canada
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Marketed as Reactine (30pk) in Canada

Generic Versions
What are generics?

Cetirizine

Strength
5mg
Country
United States
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Cetirizine

Strength
10mg
Country
United States
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Cetirizine Prescription Required

Strength
20mg
Country
Canada
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Marketed as Mint-Cetirizine in Canada

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Important information about Zyrtec

How does Zyrtec work?

The active ingredient in Zyrtec is cetirizine hydrochloride. It works as an antihistamine by lessening the effects of the natural chemical histamine in the body during an allergic reaction. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

How do you use Zyrtec?

Follow all directions given to you by your doctor and read all documents provided, including the full Prescribing Information, FDA-Approved Product Labeling, Instructions for Use, and Medication Guide before using Zyrtec. However, the following is a synopsis of the general guidelines for the use of Zyrtec:

  • Read all directions on the product package carefully before taking Zyrtec over-the-counter (OTC).
  • Take it as prescribed by your doctor.
  • For chewable tablets, chew each tablet well and swallow.
  • If you are using the liquid form of this medication, measure it carefully with the supplied measuring device/spoon. Do not use a household spoon, as you may not get the correct dose.
  • Do not attempt to increase your dose or take this medication more often than directed.

What are the side effects of Zyrtec?

The most common side effects of Zyrtec include:

  • Nausea
  • Vomiting
  • Diarrhea
  • Drowsiness
  • Tiredness
  • Stomach pain
  • Headache
  • Sweating
  • Numbness/Tingling
  • Altered sense of taste
  • Constipation
  • Dry mouth
  • Sore throat

Some individuals may experience serious side effects while using Zyrtec. These side effects may require immediate medical attention. If you experience any of the following, contact your healthcare provider or seek emergency medical help:

  • Difficulty urinating
  • Symptoms of a serious allergic reaction include a rash, itching/swelling (face/tongue/throat), severe dizziness, and trouble breathing

These are not all of the possible side effects of Zyrtec. You should always seek medical advice from your healthcare provider for any questions or concerns about your medical condition or treatment. Read all patient information, medication guides, or drug information sheets that come with this medication. You can also report adverse effects to the Food and Drug Administration at www.fda.gov/medwatch or 1-800-FDA-1088.

What are the warnings or precautions for Zyrtec?

Before starting Zyrtec, it is crucial to discuss any existing health conditions with your healthcare provider. You should be sure that your healthcare provider is aware of all your medical conditions, including if you have:

  • Recently used alcohol, sedatives, or tranquilizers
  • Difficulty urinating (due to an enlarged prostate)
  • Kidney disease
  • Liver disease
  • Previous Zyrtec allergy or are allergic to other antihistamines such as loratadine, hydroxyzine, or levocetirizine

Are there any contraindications with Zyrtec?

  • Zyrtec may impair your thinking or reactions. Be cautious if you drive or do anything that requires you to be attentive. Drinking alcohol can also increase certain side effects of Zyrtec. It is also important to note that Zyrtec does not prevent hives or treat serious allergic reactions (such as anaphylaxis). Also, Zyrtec is very similar to loratadine, hydroxyzine, and levocetirizine. Do not use these medications while taking Zyrtec.
  • Be sure to check the product labels for all the inactive ingredients, which can cause allergic reactions or other problems.

How long does it take Zyrtec to work?

Zyrtec will begin to work within one hour after you take it. It provides allergy relief for 24 hours for symptoms such as sneezing, runny nose, itchy and watery eyes, and itchy nose or throat.

What interacts with Zyrtec?

When Zyrtec is taken with other prescription drugs, over-the-counter medications, vitamins, and supplements, it may change how they work or increase the frequency or severity of side effects. Make sure that you tell your healthcare professional about anything that you are taking so they can check for drug interactions, including:

  • Alcohol
  • Other cold or allergy medicines that contain antihistamines such as chlorpheniramine or diphenhydramine
  • Marijuana (cannabis)
  • Sleep or anxiety medications (alprazolam, lorazepam, zolpidem)
  • Muscle relaxants (carisoprodol, cyclobenzaprine)
  • Any other medications or drugs that may cause drowsiness

What doses of Zyrtec are available?

There are varying forms of Zyrtec available. Below are some examples:

  • Zyrtec 5 mg and 10 mg tablets
  • Zyrtec 5 mg and 10 mg chewable tablets
  • Liquid syrup

How do I store Zyrtec?

Store Zyrtec at room temperature away from any light and moisture. Do not store this medication in the bathroom. Keep this medication away from children and pets.

Which pharmaceutical company manufactures Zyrtec?

McNeil Consumer Healthcare Division is the pharmaceutical company that manufactures Zyrtec.

Is there a generic version of Zyrtec?

There are lower-cost generics available of the brand name Zyrtec.

How do I stop taking Zyrtec?

Do not stop or change the dosage while taking this medication without your physician's approval.

Can Zyrtec be used if I am pregnant?

Talk to your doctor if you are already pregnant or if you have any plans to become pregnant. They will know or recommend what is best for you. Make sure to discuss the risks and benefits with your doctor and only use Zyrtec when needed.

Can Zyrtec be used if I am breast feeding?

Zyrtec is known to pass into breast milk. Talk to your doctor if you are already breastfeeding or if you have any plans to breastfeed. They will know or recommend what is best for you.

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Important information about buying Zyrtec from UniversalDrugstore™

What happens after I place my order for Zyrtec with Universal Drugstore?

Once you complete your order, we process, verify, and dispatch your medication. You’ll receive email updates at each stage, including tracking details once your order ships. If any additional documentation is needed (such as a valid prescription), we’ll contact you promptly. Once approved, your order is charged and delivered directly to your doorstep.

How long does it take to process and deliver my order for Zyrtec?

Orders are typically processed within 1–3 business days once all required documents are received and approved. Standard delivery times range from 10–18 business days, depending on your location.

Can I track my order of Zyrtec?

Yes! Once your medication ships, you will receive an email with tracking information so you can monitor your shipment every step of the way.

What should I do if there is an issue with my order for Zyrtec?

Our Customer Care team is available 24/7 to assist with any order-related concerns or questions. If you experience delays, missing items, or need support, contact us using the details provided in your confirmation email.

How is my medication packaged to ensure privacy and safety?

All orders are shipped in discreet, plain packaging to protect your privacy. Medications are securely packaged to prevent damage and ensure they arrive in top condition.

Does Universal Drugstore ship medications that require refrigeration or special handling?

Yes. We use cold-chain shipping methods to safely transport temperature-sensitive medications, ensuring they maintain proper storage conditions throughout delivery.

What are the shipping costs, and does Universal Drugstore offer free delivery?

Shipping costs vary depending on your location and shipping method. Free shipping promotions may be available—check the checkout page for the latest offers. Orders above $100 going to a US destination will receive free shipping.

Does Universal Drugstore accept Medicare or Medicaid for prescriptions?

Currently, we do not bill Medicare or Medicaid directly. However, we provide detailed receipts and documentation that you can submit to your insurance provider for potential reimbursement.

Can I use private health insurance to cover my prescription from Universal Drugstore?

Universal Drugstore does not bill private health insurance directly, but we provide a detailed invoice that you can submit to your insurer for possible reimbursement. Many insurers will accept Unievrsal Drugstore’s documents, but if you have any questions, check with your insurance company prior to purchasing.

How secure is my payment information when ordering from Universal Drugstore?

We use advanced SSL encryption and secure payment processing to ensure that all transactions are 100% protected against fraud and unauthorized access.

Can I order a generic alternative to Zyrtec?

Universal Drugstore offers many generic alternatives that provide the same active ingredients at a lower cost. Search for your medication and compare pricing for generic vs. brand-name options. Generic availability depends on the medication.

Do I need a prescription to order Zyrtec?

If your medication requires a prescription, you must upload it online, via email, or fax. Over-the-counter (OTC) medications do not require a prescription. All prescription medication purchases require a valid and approved prescription.

Can I order multiple medications at once?

Yes! You can add multiple medications to your cart, including prescription, OTC, and pet medications, and complete your purchase in a single checkout process.

Can I refill my prescription through Universal Drugstore?

Yes! If your prescription includes refills, you can reorder quickly by logging into your account and selecting your medication for a hassle-free refill process. Always refill your medication proactively and ontime, to ensure you do not run out of important medication.

Does Universal Drugstore offer discounts or price matching?

Yes! We offer:

  • Up to 80% savings on medications
  • Price match guarantee – we’ll match competitor pricing on qualifying medications
  • 10% off your first order for new customers

How can I contact Universal Drugstore for additional support?

We offer 24/7 customer support via phone, email, and chat. Visit our Contact Us page for assistance with ordering, shipping, or medication questions.

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Important

The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes to increase health awareness only. No material on this site is intended to be a substitute for professional medical advice, diagnosis or treatment. 



Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.