Maximum Recommended Dose of Loratadine for Adults and Children Over 6 Years

Dosing Guidelines by Age

The American Academy of Otolaryngology-Head and Neck Surgery recommends a maximum dose of 10 mg once daily for adults and children 6 years and older, with a maximum of 10 mg in 24 hours 1
For children 2-5 years, the recommended dose is 5 mg once daily, with a maximum of 5 mg in 24 hours 1

Loratadine is a second-generation H1-receptor antagonist with minimal sedative effects at recommended doses, according to the Journal of Allergy and Clinical Immunology 2
Unlike first-generation antihistamines, loratadine does not cause significant sedation or performance impairment when used at recommended doses, as reported by the Journal of Allergy and Clinical Immunology [3] [2]

Possible sedation may occur with higher than usual doses, as noted by the American Academy of Otolaryngology-Head and Neck Surgery 1
Other occasional side effects include mucosal dryness and urinary retention, according to the American Academy of Otolaryngology-Head and Neck Surgery 1
Loratadine has sedative properties when dosed at higher than recommended doses, which is why exceeding the maximum dose is not advised, as reported by the Journal of Allergy and Clinical Immunology 2

For patients with severe renal impairment, the British Journal of Dermatology recommends use with caution [4] [5]
For patients with hepatic impairment, the British Journal of Dermatology recommends use with caution [4] [5]
For elderly patients, the American Academy of Otolaryngology-Head and Neck Surgery recommends standard adult dosing (10 mg daily) 1

Exceeding the recommended dose can increase the risk of sedation and other adverse effects, as reported by the Journal of Allergy and Clinical Immunology 2
While it has become common practice in some clinical settings to increase antihistamine doses above manufacturer's recommendations for patients who do not respond to standard doses, this should be done with caution and only when potential benefits outweigh risks, according to the British Journal of Dermatology 4

Loratadine, fexofenadine, and desloratadine do not cause sedation at recommended doses, unlike cetirizine and intranasal azelastine which may cause sedation even at recommended doses, as reported by the Journal of Allergy and Clinical Immunology 2