Dr. Cheng explains that inhalation medicines and topical sprays are taken in doses only some 0.5 % as strong as those used with oral medication, and that they make it possible to reduce the systemic side effects commonly seen with oral medication and injections. This is a new trend in allergy treatment.
他解釋，吸入或局部噴劑，劑量只有口服用藥的兩百分之一左右，可以減少口服或注射後引起的全身性副作用，是目前過敏用藥治療的新趨勢。