Fang-Feng (Saposhnikovia divaricata) is a well-known herb in Traditional Chinese Medicine (TCM) and has been used historically to treat symptoms associated with "wind" conditions, such as allergic rhinitis. In TCM, Fang-Feng is considered to "expel wind" and alleviate symptoms like nasal congestion, sneezing, and runny nose, which are interpreted as manifestations of "wind-cold" or "wind-heat" invasions. Classic TCM formulas such as Yu Ping Feng San and Cang Er Zi San include Fang-Feng and are commonly prescribed for allergic rhinitis and related respiratory allergies.

Scientifically, there are limited clinical studies directly evaluating Fang-Feng's efficacy in allergic rhinitis. Some pharmacological research suggests that Fang-Feng may have anti-inflammatory, antihistamine, and immune-modulating effects, which could be relevant to allergic conditions. However, most evidence comes from in vitro or animal studies and not from high-quality human trials. Reviews of TCM formulas containing Fang-Feng for allergic rhinitis note traditional use and some promising findings but also highlight the need for more rigorous clinical research.

Therefore, while the use of Fang-Feng for allergic rhinitis is well established in tradition and supported by centuries of empirical use in TCM, the scientific evidence remains preliminary and not definitive.