This drug works by constricting the capillaries in the nasal membranes and reducing their leaking. Used for a few days followed by several days off the drug is best. Used often and enough, the constriction injures the capillaries & they will break down & leak, causing boggy congestion as a result. Staying off the drug for a week or two when that occurs allows recovery.
Answered 12/31/2022
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