Cetirizine HCL 10mg works by blocking histamine, a chemical your body releases during allergic reactions. This blockade reduces symptoms like sneezing, itching, and runny nose. It’s a second-generation antihistamine, meaning it’s less likely to cause drowsiness than older versions.
Treating Allergic Reactions
This medication effectively treats various allergic conditions. It’s commonly prescribed for seasonal allergic rhinitis (hay fever), urticaria (hives), and chronic idiopathic urticaria. Relief typically begins within 30-60 minutes of taking a dose and lasts for up to 24 hours.
Understanding Dosage and Administration
Follow your doctor’s instructions carefully regarding dosage. The standard adult dose is usually one 10mg tablet once daily. Do not exceed the recommended dosage. Take the tablet with or without food. Consistent daily use provides optimal symptom management.
Potential Side Effects
While generally well-tolerated, some individuals may experience mild side effects. These can include drowsiness, headache, fatigue, dry mouth, and nausea. These effects usually subside with continued use. Consult your doctor if side effects persist or worsen.
Contraindications and Precautions
| Severe kidney disease | Dosage adjustment may be necessary. |
| Breastfeeding | Consult your doctor before use. |
| Pregnancy | Discuss potential risks and benefits with your doctor. |
Interactions with Other Medications
Inform your doctor of all medications you are currently taking, including over-the-counter drugs and herbal remedies. Certain medications may interact with cetirizine HCL.
When to Consult a Doctor
Seek medical attention if your allergic symptoms worsen despite taking cetirizine, or if you develop new or unusual symptoms. This medication should only be used as directed by a healthcare professional.


