Some patients have applied Rehmannia to be powdered into a decoction or made into an antiseptic nasal powder to treat rhinitis, but the efficacy of this is not exact and it is not recommended. There are many types of rhinitis, not all of which are triggered by bacterial infection. It is not always caused by bacterial infection. For example, allergic rhinitis is induced by a metamorphic reaction in the patient’s nasal cavity, which is not related to bacteria, so the application of Ling Guang Cao to treat it may not necessarily have a useful effect. 2. These medicines have fewer side effects and are more effective. These medications have fewer side effects and are very effective and can achieve good results. They can completely replace Rehmannia for rhinitis, so using Rehmannia for rhinitis is not particularly recommended.