Relating Lorphenadine to other well-known allergy medicines, like: Cetirizine (Zyrtec): This medication is a second-generation antihistamine, similar to Lorphenadine. Cetirizine, on the other hand, seems to make people drowsier slightly more often than Lorphenadine. Loratadine (Claritin): Non-sedating allergens like a drug called and lorphenadine have a lot in common. But for ot... https://timeexchanged.com/nstructions-for-taking-lorphenadine-totally/