Inflanaze is a cortisone spray used in older children with allergic nasal problems. It will have absolutely no beneficial effect on your baby's post nasal drip.I don't like using Otrivin in such a young baby either as it may cause a problem called rebound rhinitis. The Zyrtec may help a bit and it is safe. I would advise you to only use the Zyrtec and infant saline nose drops twice a day to clear his nose.
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