It's fast approaching fall and you know what that means, don't you, parents? Yep, that's right -- ragweed pollen and outdoor mold spore counts are rising rapidly too, at least in most areas of the U.S. And that means nasal allergy symptoms may be increasing as well:

• Runny nose
• Stuffy nose
• Sneezing
• Itchy nose
• Post-nasal drip

The traditional treatment for nasal allergies, in both adults and children, has been oral medication, in the form of an antihistamine. Early antihistamines were effective,...