4-7 days: Nasal steroid starts working in about 12 hrs but works optimally only after several days of daily use. Do note that not all people respond to nasal steroid even though it remains the most effective for allergic rhinitis.
Answered 4/8/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
5 doctors weighed in across 3 answers
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