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Fact Table
| Fact Table | |
|---|---|
| Formula | C21H25ClN2O3 |
| License | FDA approved |
| Bioavailability | ~70% |
| Legal status | Over-the-counter (OTC) and Prescription |
| Chemical Name | [2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetic acid |
| Elimination half-life | ~7–10 hours |
| Dosage (Strength) | 5mg, 10mg tablets; 5mg/5mL oral solution; 10mg chewable tablets |
| Pregnancy | Consult Doctor (Category B) |
| Brands | Zyrtec, Reactine |
| Protein binding | ~93% |
| PubChem CID | 2678 |
| MedlinePlus | a698026 |
| ChEBI | 3561 |
| ATC code | R06AE07 |
| DrugBank | DB00341 |
| KEGG | D07564 |
| Routes of administration | By mouth |
Zyrtec is an allergy treatment medication used for relief from cold or allergy symptoms, and it may also be used to treat hives or other conditions that cause extreme itching in the skin. Cetirizine is an effective antihistamine that disables the immune system’s production of the histamines that cause the symptoms of an allergic reaction. It is a good choice for seasonal allergies or pet allergies and you can buy Zyrtec without a prescription here at Canpharm.
Directions
Standard dosage for Zyrtec 10mg is to take tablet 1x daily
Ingredients
The active ingredient in Zyrtec is Cetirizine
Cautions
Let your doctor know of any history of kidney or liver disease, an enlarged prostate, or difficulty urinating before starting on Zyrtec
Use of this medication may make you dizzy or drowsy and it may be advisable to avoid driving or operating machinery while you are taking Zyrtec
People with diabetes will want to use Zyrtec generic with caution because medication may contain sugar
Be aware of medication expiry date
Interactions
Negative drug interactions may occur between Zyrtec and other Rx or OTC medications, including hydrocodone, alprazolam, lorazepam, zolpidem, carisoprodol, cyclobenzaprine, chlorpheniramine, and diphenhydramine. Let your doctor know of all medications you are currently taking before proceeding to buy Zyrtec online.
Side Effects
Zyrtec side effects may occur and some users may experience drowsiness, fatigue, stomach pain, or dry mouth. In rarer instances users may find they have difficulty urinating because of this medication. If side effects are seen you may want to discontinue use and meet with a doctor again to discuss allergy treatment medication alternatives.
Frequently Asked Questions about Zyrtec (Cetirizine)
Can dogs have Zyrtec?
Yes, dogs can take Zyrtec (cetirizine), but the dosage should be carefully adjusted based on the dog’s size and condition. Always consult your veterinarian before giving your dog any medication.
Can cats take Zyrtec?
Yes, cats can take Zyrtec, but like with dogs, the dosage should be determined by a veterinarian. It is important to follow their recommendations for safety and effectiveness.
How long does Zyrtec take to work?
Zyrtec typically starts working within 1 hour, and its full effects are usually seen after 2–3 hours, especially for relieving allergy symptoms.
How much Zyrtec can I give my dog?
The typical dosage for dogs is around 0.5 mg per pound of body weight, given once or twice daily. However, you should always consult your veterinarian for the proper dosage for your dog’s specific condition.
Can you take Zyrtec while pregnant?
Zyrtec is classified as a Category B drug during pregnancy, meaning it is generally considered safe, but it should only be used when necessary. Always consult your healthcare provider before using it during pregnancy.
Can you take Zyrtec and Benadryl together?
It is generally not recommended to take Zyrtec and Benadryl (diphenhydramine) together, as both are antihistamines and could increase the risk of side effects like drowsiness or dry mouth. Always consult your doctor before combining medications.
Can you take Mucinex and Zyrtec together?
Yes, Mucinex (guaifenesin) and Zyrtec can generally be taken together, as they work in different ways (Mucinex is an expectorant, and Zyrtec is an antihistamine). However, it’s best to check with your doctor to ensure compatibility based on your specific health needs.
Can you take Sudafed with Zyrtec?
Yes, you can take Sudafed (pseudoephedrine) with Zyrtec, as they work in different ways (Sudafed is a decongestant and Zyrtec is an antihistamine). However, always consult your doctor to ensure this combination is safe for your individual health situation.
How long does Zyrtec stay in your system?
Zyrtec typically stays in your system for about 24 hours, which is why it is usually taken once a day. Its half-life is around 8 hours.
Can Zyrtec cause drowsiness?
Zyrtec is less likely to cause drowsiness than older antihistamines like Benadryl, but some people may still experience mild drowsiness. If drowsiness occurs, it's best to take it before bedtime.
