How Flonase Works: Flonase is an anti-inflammatory nasal spray. The steroid it contains can decrease swelling of the mucosal membranes of the nose that cover the turbinates. This occurs gradually, and may start as early as a few hours after the first dose and peak around three weeks later. The turbinates themselves are made of cartilage and they do not shrink in response to medication. Surgery can reduce them.
Answered 2/2/2021
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