Hi, may I answer your health queries right now ? Please type your query here... I hope so, I have been given loratadin for 3 weeks and now I'm taking roxitromicin (macroilid antibioticc). I'm wondering, is it possible to have an allergy to a dog (my husband bought it in the meantime), but the quantity antihistaminic could be keeping me safe so far. I have a cat and no allergy whatsoever thanks in advance