Qnasl, or beclomethasone nasal, is a prescription medication that is in the nasal steroids drug class. Qnasl is a corticosteroid which reduces inflammation that occurs in the body. This helps to reduce allergic reactions in patients as well as the uncomfortable side effects that can often occur with inflammation. Qnasl is administered through the nasal passages as a nasal spray. This is especially effective because many allergic reactions to pollens result in a stuffy or runny nose. This nasal spray will reduce this symptom and any inflammation in the nasal passages or sinuses at the source.