Cochlearia is the trade name, the generic name is fluticasone propionate nasal spray, the use of the left hand spray the right nostril, the right hand spray the left nostril, the specific dosage and the patient’s own situation related to the patient, can not be generalized, the general maximum daily dose of no more than 4 sprays per nostril. There are many precautions to be taken with this product, the main ones being that it should be used before exposure to allergens, and that it should be used regularly. Spray the right nostril with the left hand and the left nostril with the right hand. Adults and children over 12 years of age should be given two sprays in each nostril once daily (200 micrograms per day) in the morning; some patients may require one spray in each nostril in the morning and one spray in the evening until their symptoms improve; when symptoms are under control, one spray per nostril per day should be maintained. In addition, the maximum daily dose should not exceed 4 sprays per nostril. A very common adverse reaction to this product is epistaxis (bleeding from the nose); common adverse reactions are unpleasant taste and odor after use, headache, and causing dryness and irritation of the nose and throat; very rare adverse reactions include allergy/allergic-like reaction, bronchospasm, rash, facial or tongue edema, and perforation of the nasal septum. It is worth noting that the product is contraindicated for those who are allergic to the product, allergists and athletes should be cautious, and the product should not be used continuously for more than 3 months without a doctor’s permission. In addition, the use of this product should be before exposure to allergens, should do regular use of medication and so on. Specific use is recommended to consult a physician or pharmacist, not blindly self-medication.