J. Allergy Clin. Allergy Asthma Immunol. Allergy Asthma Immunol. Allergy Asthma Immunol. Cynorhodon is used in a spray form and therefore the risk is dose dependent.
Atopic subjects are more susceptible.
Rhinitis and asthma. Urticaria and anaphylactic reactions have been reported. J. Allergy Clin. Symptoms often appear in subjects with a predisposition to bronchial hyperreactivity, however this is not always the case. Recovery to normal FEV1 values can take from 9 months to a year after exposure to the risk has ceased.