Cetirizine

Dosage forms available

• Cetirizine is available as a tablet and syrup for both adults and children. ​

Age and dose restrictions

• Cetirizine can be used in both adults and children. However, dosage adjustments are necessary based on age and weight. 

Contraindications

• Individuals with a known allergy to cetirizine or hydroxyzine should avoid using this medication. Additionally, caution is advised in patients with severe renal impairment. 

Other medications to avoid

• Concurrent use of cetirizine with alcohol, sedatives, or tranquilisers can increase the risk of drowsiness and impair cognitive functions. It is advisable to avoid or limit the use of such substances while taking cetirizine. ​

Overdose and missed dose

• In case of an overdose, seek immediate medical attention, especially if severe drowsiness occurs. 
• If a dose is missed, take it as soon as remembered unless it is almost time for the next dose; in such cases, skip the missed dose and resume the regular dosing schedule. 

Management of side effects

• To manage mild side effects like dry mouth, increasing fluid intake can be beneficial. If drowsiness occurs, avoid activities requiring mental alertness, such as driving, until you know how cetirizine affects you. Persistent or severe side effects should prompt consultation with a healthcare provider. ​

Use in driving and operating machinery

• Cetirizine may cause drowsiness in some individuals. It is recommended to assess your response to the medication before engaging in activities that require mental alertness, such as driving or operating machinery. 

Use in pregnancy and lactation

• While cetirizine is generally considered safe during pregnancy, it is advisable to consult a healthcare provider before use. Use during breastfeeding is not recommended, as cetirizine can pass into breast milk. 

Caution in other conditions

• Caution is advised when giving cetirizine to elderly patients or those with hepatic or renal impairment, as they may be more susceptible to adverse effects.

Special dietary and lifestyle recommendations

• Maintaining a healthy lifestyle, including a balanced diet and regular exercise, can help manage allergy symptoms effectively. 
• Avoiding known allergens and irritants, such as pollen, dust mites, and pet dander, can also reduce the frequency and severity of allergic reactions.​