Odactra is an allergenic extract from house dust mites (Dermatophagoides farinae and Dermatophagoides pteronyssinus). It is used to treat allergic rhinitis caused by house dust mites.

Changing weather is difficult, asthma patients should limit exposure to high humidity environments to limit the onset and worsening of clinical symptoms of the disease. Humidity in the air inside the house should be maintained between 30% and 50%. When the weather becomes humid, asthma patients should stay indoors, close the windows and turn on the air conditioner.