The nasal spray and oral inhaler formulation have fewer corticosteroid side effects than the tablet formulation because they limit systemic (blood) absorption. However, systemic absorption is not negligible even with correct administration. These side effects include weakened
immune system, increased risk of
systemic infections,
osteoporosis, and elevated
pressure in the eyes.
Nasal spray Common side effects may include nasal irritation (burning, stinging, bleeding), headache, upset stomach (nausea, vomiting), and diarrhea. Rare side effects include infection (evidenced by, for example, fever, sore throat, and cough),
vision problems,
severe swelling, hoarse voice, and
difficulty breathing or swallowing. ==Pharmacology==