Efficacy and safety/tolerability of an investigational drug for ragweed allergy

The goal of this study is to compare the efficacy of an investigational ragweed allergy drug with placebo. This study will evaluate the effect on allergy symptoms and use of medication during the 2007 ragweed pollen season. The study will include nine study visits and will continue through the end of ragweed season.

You may be eligible to participate in this study if you:

• Are 18 to 59 years of age
• Have symptoms of seasonal allergic rhinitis (runny/stuffy nose) and/or conjunctivitis (itchy/runny eyes) due to exposure to ragweed

This is a partial list of eligibility requirements. To inquire about your eligibility, call the contact number provided. If you wish to inquire via e-mail, please reference the name of the study.