The key difference between Cetirizine and Loratadine is that Cetirizine relieves Allergy Symptoms within one hour after oral administration with more sedative effects, while Loratadine may take three hours to relieve allergy symptoms with less sedative effects. Cetirizine and Loratadine are two second-generation antihistamines used to treat allergy symptoms. They block the effect of histamine, […]