Siler root, also known as Fang Feng (Saposhnikovia divaricata), is a traditional Chinese medicinal herb primarily used for its purported ability to dispel wind and relieve pain, as described in classical texts. In the context of erectile dysfunction (ED), there is no robust scientific evidence supporting its efficacy; however, its inclusion in some traditional formulas for male vitality and sexual function provides a basis for its traditional use. In Traditional Chinese Medicine (TCM), ED is sometimes attributed to imbalances such as "wind dampness" or deficiencies in kidney yang, and siler root may be included in polyherbal formulations aimed at restoring balance and improving overall vitality. However, its role is typically supportive rather than central, and it is not a primary herb for ED in major TCM texts.

Scientific studies directly investigating siler root for ED are essentially nonexistent. Any claims about its effectiveness for this condition are based on tradition, anecdotal reports, and its use in broader tonic or revitalizing formulas. Therefore, the evidence for its efficacy in treating erectile dysfunction rates low, with a score of 1 out of 5, reflecting traditional but not scientific validation.