Azelastine hydrochloride displayed no sensitising potential in the guinea pig. Azelastine demonstrated no genotoxic potential in a battery of in vitro and in vivo tests, nor any carcinogenic potential in rats or mice. In male and female rats, azelastine at oral doses greater than 3 mg/kg/day caused a dose-related decrease in the fertility index; no substance-related alterations were found in the reproductive organs of males or females during chronic toxicity studies, however, embryotoxic and teratogenic effects in rats, mice and rabbits occurred only at maternal toxic doses (for example, skeletal malformations were observed in rats and mice at doses of mg/kg/day).
The most common side effects associated with fluticasone are headache , throat infection, nasal irritation, sneezing , cough , nausea , vomiting . Hypersensitivity reactions such as skin rash , itching , facial swelling, and anaphylaxis may occur. Some children may experience growth suppression when using fluticasone. A bloody nasal discharge ( nosebleed ) and septum perforation may occur. Fungal infection of the nose and throat, glaucoma , and cataracts are also associated with intranasal fluticasone.