No effect: Loratidine or Claritin is an antihistamine blocking the effects of histamine on nerve endings and the cells that form small blood vessels. It helps treat itching, sneezing, runny nose and post nasal drip. It is ineffective for congestion. Topical antihistamine sprays like azelastine snf corticosteroid sprays like fluticasone are effective for congestion. You'll need a prescription from your hcp.
Answered 6/24/2014
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