Thank you. It is difficult to know exactly what is going on here. My feeling is that she has allergic rhinitis and asthma, but you mention that her allergy tets were negative. I still think that you need a clear diagnosis of her complaint before any treatment can or should be recommended. It would be best to take your daughter to see a paediatric allergist who will make sure that the correct tests are done.
Duolin is a combination brochodilator used as part of the treatment of asthma in children.
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