Is Hou Fengfen effective in treating laryngitis?

Hou Feng Powder is a traditional Chinese medicine powder made of Calculus Bovis, Margarita, Borneolum Syntheticum, Coptidis Rhizoma, Glycyrrhrizae Radix, Radix Sophorae Tonkinensis and Indigo Naturalis. Calculus Bovis and Borneolum Syntheticum are the main drugs in the prescription, which have the functions of clearing away heat and toxic materials, relieving pain and relieving convulsion, and can be used to treat sore throat, sore mouth and tongue, carbuncle and furuncle. Pearl has the functions of calming nerves, relieving convulsion, detoxicating and promoting granulation, and is often used to treat aphtha, throat erosion and chronic ulcer. Glycyrrhiza uralensis Fisch has the functions of purging fire, detoxicating and harmonizing various medicines, and can be used for treating sore throat, carbuncle and sore. Coptidis Rhizoma, Indigo Naturalis and Sophora Tonkinensis are good medicines for clearing away heat and dampness, reducing fire and detoxifying, and have the functions of reducing swelling, relieving pain and clearing throat. This prescription is mainly used to treat laryngitis, carbuncle of larynx, sore throat, sore mouth, swollen gums, wound ulceration, etc. These drugs have the functions of diminishing inflammation, relieving pain, clearing away heat and relieving sore throat. Therefore, Hou Feng Powder is a good medicine for treating pharyngolaryngitis, and also has a good therapeutic effect on aphtha, mucosal erosion, sinus abscess, middle ear suppuration, skin ulceration and so on. During the treatment, this medicine can be sprayed on the affected area 3~4 times a day, or used according to the doctor's advice.